Look at this series: 3, 4, 7, 8, 11, 12, . . .

What number should come next ?

What number should come next ?

This alternating addition series begins with 3;

then 1 is added to give 4;

then 3 is added to give 7;

then 1 is added, and so on.

Rule = (first number + 1), (second number + 3), (third number + 1), (fourth number + 3)...

Now The series is 3, 4, 7, 8, 11, 12...

(3 + 1 = 4), (4 + 3 = 7), (7 + 1 = 8), (8 + 3 = 11), (11 + 1 = 12), (12 + 3 = 15)...

So the answer is 15..

Sherry's math test had 100 problems, 40 arithmetic, 30 algebra, 30 geometry problems. Although he answered 30% of arithmetic, 40% of algebra and 70% of geometry problems correctly, still he got less then 50% marks. How many more questions he would have to answer more to get passed.

Arithmetic: 30% of 40 = 12

Algebra : 40% of 30 = 12

Geometry : 70% of 30=21

Total correct = 12+12+21=45

50-40=5 marks needed to pass.

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The ratio of two brothers John and Harry is 4 / 5 . However if the age of John before 10 years and that of Harry after 10 years than the original ratio is reversed. What is the age of Harry?

let's John age =a and Harry age = b

Given that

a/ b =5 / 4

4 a=5 b

4a- 5b =0..... equation 1

and also given that

a - 10 / b + 10 =4 / 5

a5 - 50= 4b+40

5 a- 4b= 90 .......equation 2

By solving both equation

so, Harry is 40 years old.

Look at this series: 58, 52, 46, 40, 34, . . .

What number should come next?

What number should come next?

This is a simple subtraction series.

Each number is 6 less than the previous number.

(58 - 6 = 52), (52 - 6 = 46), (46 - 6 = 40), (40 - 6 = 34),(34 - 6 = 28)

So the answer is B = 28..

In following questions, three sequence of alphabets/numerals are provided which correspond to each other in some way. Find out alphabets/numerals that come in the blank places. Choose the correct option

C _ B _ D _ A _ B B D D 2 _ _ 4 _ 3 4 _ ? ? ? ? _ a _ c b a _ d _ _ _ _

C _ B _ D _ A _ B B D D 2 _ _ 4 _ 3 4 _ ? ? ? ? _ a _ c b a _ d _ _ _ _

Clearly, 2 corresponds to C and 4 corresponds to A.

So, 1 and 3 corresponds to B and D.

Thus, the missing sequence is 1, 1, 3, 3 or 3, 3, 1, 1..

In following number series, two terms have been put within brackets. Choose the appropriate option

Choose the appropriate option 3, 10, 29, (66), (127), 218

Choose the appropriate option 3, 10, 29, (66), (127), 218

The sequence is 1

Clearly, both the terms 66 and 127 are correct..