A , E , X , H , U , ?

Two parallel series, one with skipping two alphabets in reverse order and other with skipping two alphabets in forward order.

N , N , P , L , S , I , W , ?

Two parallel series. One with skipping 1 , 2 , 3,... alphabets in forward order and other with skipping same alphabets in reverse order..

3925 and 277 , 4697 and 2416 , 6257 and ?

3 * 9 = 27! 5 + 2 = 7!(277).! !4 * 6 = 24!and 9 + 7 = 16!(2416)! !Similarly,!6 * 2 = 12!and 5 + 7 = 12!(1212).

1 , 2 , 3 , 5 , 7 , 10 , 13 , 17 , 21 , ? , ?

+1, +1, +2, +2, +3, +3, +4, +4, +5, +5.

B , W , F , P , M , E , ?

Two parallel series one with skipping 3 , 6,... alphabets and other with skipping 6 , 12,... alphabets..

6 , H , 9 , K , 11 , M , 14 , P , 16 , R , 19 , U , 21 , ?

Add 3 and 2 alternatively in number series and skip 2 and 1 alphabets alternatively.

M , F , N , G , R , I , S , L , W , P , ?

Two parallel series one with skipping 0 and 3 alphabets alternatively and other with skipping 0 , 1 , 2,....

Which number is the odd one out, 1, 4, 9, 16, 20, 36, 49

All other numbers are perfect square of numbers but 20 is not perfect square of any number..

20 , 30 , 45 , ?

Multiply previous term with 1.5 to find next term..

1 , 2.65 , 4.3 , 5.95 , 7.6 , ?

1.65 is adding in each term..

1 , 4 , 2 , 5 , 3 , 6 , 4 , ?

There are two interwoven sequences.! !First starts with 1 and second with 4!Add 1 in both series.

1 , 1 , 3 , 15 , 105 , ?

Multiply by 1, 3, 5, 7, 9.

Which number is the odd one out, 396, 462, 572, 427, 671, 264

In each number except 427, the middle digit is the sum of other two..

3 , 10 , 33 , 104 , ?

Multiply with 3 and add 1, 3, 5, 7,....

17 , 34 , 51 , 68 , ?

Add 17 each time..

1 , 1 , 2 , ? , 24 , 120 , 720

Multiply by 1, 2, 3 and so on....

A , Y , W , U , S , Q , ?

Skip one alphabet in reverse order..

3.4 , 6.3 , 9.2 , 12.1 , 15 , ?

Add 2.9 in previous term to find next term..

Find the odd man out, 3, 5, 11, 14, 17, 21

Each of the numbers except 14 is an odd number.! !The number '14' is the only EVEN number..

T , Q , M , H , ?

Skip 2 , 3 , 4,... alphabets in reverse order..

64521 is to 41256 as 38297 is to..

A B C D E!6 4 5 2 1! !B E D C A!4 1 2 5 6! !A B C D E!3 8 2 9 7! !B E D C A!8 7 9 2 3.

Which number is the odd one out, 8, 27, 64, 100, 125, 216, 343

All others are perfect cube of any number but 100 is not the perfect cube of any number..

F , G , I , L , P , ?

Skip alphabets 0,1,2,....

1 , 2 , 4 , 8 , ?

Add 1 first and then add double of previously added number..

14 , 16 , 28 , 32 , 42 , 48 , 56 , 64 , ? , ?

There are two interwoven sequences, add 14 starting at 14 and add 16 starting at 16..

2 , 14 , 32 , 56 , 86 , ?

Add 12 , 18 , 24 , 30 , 36,....

Which number is the odd one out, 835, 734, 642, 751, 853, 981, 532

In each number except 751, the difference of third and first digit is the middle one..

759 , 675 , 335 , 165 , ?

Each number is formed by multiplying the number formed by the first two digits of the previous number by its third digit.! !So, 16 * 5 = 80.

7964325 is to 6975234 , 5822139 is to 2859312 as 7469851 is to ?

Reverse the first three digits then reverse the last four digits..

12 , 14 , 34 , 36 , 56 , 58 , 78 , ?

Add 2 and 20 alternatively..

B , L , R , T , ?

Skip alphabets 10 , 6 , 2 , -2 , -6,....

7/2 , 4 , 7 , 14 , ?

Multiply previous 2 numbers and divide by 2..

Which number is the odd one out, 41, 43, 47, 53, 61, 71, 73, 81

Each of the numbers except 81 is a prime number..

0 , 7 , 15 , 24 , 34 , ?

add 7 , 8 , 9 , 10 , 11,....

Which two letters come next in the sequence A , D , I , P , Y , CF , DI , FD , ?

take the numerical position of each letter in the alphabet to reveal the sequence of consecutive square numbers 1, 4, 9, 16, 25, 36, 49, 64, 81.

100 , 1 , 97.5 , 3.5 , 92.5 , 8.5 , 85 , 16 , ? , ?

There are two interwoven sequences.! ! subtract 2.5, 5, 7.5 starting at 100 and Add 2.5, 5, 7.5 starting at 1..

2 , 6 , 18 , 54 , 162 , ?

Multiply previous term with 2 to find next term..

What four-digit number should replace the question mark? 4342 (3176) 1726, 7995 (7516) 2162, 8418 (????) 1725

Delete the digits outside the brackets that appear twice, and insert the remaining digits in the brackets in the same order that they appear outside the brackets!8418 (4725) 1725.

7 , 13 , 24 , 45 , 86 , ?

Multiply previous term with 2 and subtract 1 , 2 , 3,... to find next term..

100 , 98 , 94 , 88 , 80 , 70 , ?

Deduct 2, 4, 6, 8, 10, 12.

6 , 8 , 10 , 14 , 18 , 26 , 34 , 50 , 66 , ?

Add 2, 4, 4, 8, 8, 16, 16,....

A , B , D , I , ?

Multiply position of previous alphabet with 3 and subtract 1 , 2 , 3,... respectively..

Which number is the odd one out, 3, 5, 7, 12, 17, 19

Each of the numbers is a prime number except 12..

78214 and 292 , 38421 and 459 , 69517 and ?

78 + 214 = 292!38 + 421 = 459! !So, 69 + 517 = 586.

1 , 1 , 2.5 , 3.5 , 4 , 6 , 5.5 , 8.5 , ? , ?

There are two interwoven sequences.! !+1.5 starting at the first 1, and +2.5 starting at the second 1..

F , I , M , P , T , W , ?

Skip 2 and 3 alphabets alternatively..

Which number is the odd one out, 331, 482, 551, 263, 383, 362, 284

In each number except 383, the product of first and third digits is the middle one..

B , D , G , K , P , ?

Skip 1 , 2 , 3,... alphabets..

C , G , L , R , ?

Skip 3 , 4 , 5,... alphabets..

5 , 26 , 131 , 656 , ?

Multiply by 5 and add 1 each time..

2 , -1 , 2 , -1 , 2 , ?

Subtract and add 3 alternatively..

180 , 140 , 179 , 138 , 177 , 134 , ?

Two parallel series, one with subtracting 1,2,3,... and other with subtracting 2,4,6,....

Which number is the odd one out, 10, 14, 16, 18, 21, 24, 26

All numbers are even except 21..

0.67 , 0.69 , 0.48 , 0.88 , 0.29 , 1.07 , ?

There are two series!Subtract 0.19 from the series starting with 0.67 and add 0.19 from the series starting with 0.69..

3 , 6 , 9 , 12 , 15 , ?

Add 3 in previous term to find next term..

9 , 18 , 27 , ? , 45 , ? , 63

Add 9 each time..

17 , 20 , 19 , 22 , 21 , 24 , 23 , ?

Add 3 and subtract 1 alternatively..

Which number is the odd one out, 159, 248, 963, 357, 951, 852 ?

In the rest there is the same difference between each digit! eg 8 (-3) 5 (-3) 2.

F , O , T , W , ?

Skip 8 , 4 , 2 , 1 alphabets..

Which number is the odd one out, 16, 25, 36, 72, 144, 196, 225

Each of the numbers except 72 is a perfect square..

-6 , 9 , -27/2 , 81/4 , -243/8 , ?

Multiply previous term with -3/2 to find next term..

BZ , EW , HT , KQ , ?

Skip 2 alphabets in forward order to find first alphabet and skip 2 alphabets in reverse order to find 2nd alphabet..

O , P , R , U , ?

Skip 0 , 1 , 2 , 3,... alphabets..

492 , 366 , 189 , 810 , ?

8 * 1 = 8, 8 + 0 = 8.

100 , 50 , 200 , 25 , 400 , ?

There are two interwoven sequences.! ! Multiply 2 starting at 100 and devide by 2 starting at 50..

71 , 25 , 83 , 37 , 95 , 49 , ?

Two parallel series both with adding 12..

XYZ , WVV , VSR , UPN , ?

Subtract 1 from first 3 from second and 4 from third character..

9 , 16 , 13 , 13 , 17 , 10 , 21 , 7 , ?

There are two interwoven sequences! !Add 4 starting with 9! !and subtract 3 starting with 16..

5 , 2.5 , 1.25 , 0.625 , ?

Divide previous term with 2 to find next term..

6 , 10 , 18 , 34 , 66 , ?

Add 4 , 8 , 16 , 32,....

Which number is the odd one out, 1, 4, 9, 16, 23, 25, 36

Each of the numbers except 23, is perfect square..

C , F , J , O , ?

Skip 2 , 3 , 4,... alphabets..

7 , 10 , 25 , 94 , 463 , ?

7*2 - 4 = 10!and!10*3 - 5 = 25!and!25*4 - 6 = 94!and!94*5 - 7 = 463!In the same way!463*6 - 8 = 2770.

156 , 76 , 36 , 16 , ?

Subtract 4 from previous term and then divide it with 2 to find next term..

B , D , F , H , J , L , ?

Skip one alphabet..

63 , 35 , 15 , 3 , ?

8^2 - 1 = 63!and!6^2 - 1 = 35!and!4^2 - 1 = 15!and!2^2 - 1 = 3!in the same way!0^2 - 1 = -1.

2 , 6 , 15 , 34 , 73 , ?

Multiply with 2 and add 2 , 3 , 4 , 5 , 6,....

E , H , K , N , Q , T , ?

Skip two alphabets..

7 , 12 , 19 , 28 , ?

add 5 , 7 , 9 , 11,....

1/32 , 1/16 , 1/4 , 1/2 , 2 , 4 , ?

Multiply with 2 and 4 alternatively.

2 , 7 , 5 , 5 , 8 , 3 , 11 , ?

Two parallel series one with adding 3 and other with subtracting 2..

0 , 1 , 4 , 9 , 16 , 25 , 36 , 49 , ?

Add 1, 3, 5, 7, etc..

C , F , K , R , ?

Skip 2 , 4 , 6 , 8,... alphabets.

108 , 189 , 216 , 225 , ?

Add 81 , 27 , 9 , 3,....

0 , 3 , 8 , 15 , ?

Add 3 , 5 , 7,....

B , C , E , G , K , ?

Prime numbers 2, 3 , 5 , 7 , 11 , 13,....

Which number is the odd one out, 6, 9, 15, 21, 24, 28, 30

Each of the numbers except 28, is a multiple of 3..

9 , 11 , 17 , 35 , ?

Add 2 , 6 , 18 , 54,...!here!6 = 2*3!18 = 6*3!and!54 = 18*3.

8 , 16 , 32 , 64 , 128 , ?

Multiply previous term with 2 to find next term..

25 , 50 , 27 , 46 , 31 , 38 , 39 , ?

There are two interwoven sequences.!Add 2, 4 and 8 from the sequence starting with 25!and subtract 4, 8 and 16 from the sequence starting with 50.

0 , 100 , 6 , 94 , 12 , 88 , 18 , 82 , ? , ?

There are two sequences interwoven.! !Add 6 starting at 0 and deduct 6 starting at 100..

X , U , Q , N , J , G , ?

Skip 2 and 3 alphabets alternatively in reverse..

2 , 5 , 10 , 17 , 26 , ?

add 3 , 5 , 7 , 9 , 11,....

5 , 5 , 3 , -1 , -7 , ?

Subtract 0 ,2 , 4,....

1000 , 971.4 , 942.8 , 914.2 , 885.6 , ?

Deduct 28.6 each time..

O , R , M , T , K , V , I , ?

Two parallel series one with skipping one alphabet in reverse order and other with skipping one alphabet in forward order..

2 , 20 , 42 , 68 , 98 , ?

Add 18 , 22 , 26 , 30 , 34,....

87 , 102 , 119 , 138 , 159 , ?

Adding 15 , 17 , 19,....

AZ , DX , HU , MQ , ?

skip 2 , 3 , 4,... alphabets to find first character and subtract 1 , 2 , 3,... alphabets to find second character..

100 , 97 , 91 , 82 , ?

-3 , -6 , -9 , -12!(Multiples of 3 are subtracted).

2 , 5.75 , ? , 13.25 , 17 , 20.75

Add 3.75 each time..

3/81 , 4/256 , 5/625 , ?

Add 1 in numerator and in denominator!(3*3)^2 = 81!(4*4)^2 = 256!(5*5)^2 = 625!in the same way!(6*6)^2 = 1296.

3 , 7 , 2 , 47 , ?

3^2 - 7 = 2!7^2 - 2 = 47!In the same way!2^2 - 47 = -43.

1.5 , 3 , 5.5 , 9 , 13.5 , ?

Add 1.5, 2.5, 3.5, 4.5, 5.5.

Which number is the odd one out, 2, 5, 10, 17, 26, 37, 50, 64

(1*1)+1 , (2*2)+1 , (3*3)+1 , (4*4)+1 , (5*5)+1 , (6*6)+1 , (7*7)+1 , (8*8)+1! !But, 64 is out of pattern..

100 , 96.75 , 93.5 , 90.25 , 87 , ?

Deduct 3.25 each time..

36 , 72 , ? , 144 , 180 , 216 , 252

Add 36 each time..

Which is the odd number out, 9421 , 7532 , 9854 , 8612 , 6531 , 8541 ?

All the other numbers have their digits in descending order..

1/3 , 3/7 , 6/13 , 10/21 , 15/31 , ?

Add 2 , 3 , 4,... in numerator and add 4 , 6 , 8,... in denominator..

1 , 4 , 9 , 61 , 52 , ?

Square 1 , 2 , 3,... and change the sequence of digits..

4 , 7 , 15 , 29 , 59 , 117 , ?

Multiply with 2 and subtract and add 1 alternatively..

110 , ? , 99 , 81 , 72 , 63 , 54 , 45

Deduct the sum of the digits of the previous number each time..

Which number is the odd one out, 10, 25, 45, 54, 60, 75, 80

Each of the numbers except 54 is multiple of 5..