It's dark. You have ten grey socks and ten blue socks you want to put into pairs. All socks are exactly the same except for their colour. How many socks would you need to take with you to ensure you had at least a pair?

With three socks there is always a matching pair since. Either you will not have chosen three of the same color, or a matching pair and an odd one out..

A car travel first half distance between two places with a speed of 40 km per hour and the rest of half distance with the speed of 60 km per hour. The average speed of car is:

Let the total distance covered be "s"km.

Total time taken,

=(s/2)/40+(s/2)/60

=5s/240

Average speed,

=s/(5s/240)

=s*(240/5s)

=48 km/ hr

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In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. ac _ cab _ baca _ aba _ acac

The series is acac / abab / acac / abab / acac.Thus, the pattern acac, abab is repeated.

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In following questions, a sequence of groups of alphabets and numbers is provided with one term missing , Choose the missing term from options. LXF, MTJ, NPN, OLR, ?

The first letter of each term is moved one step forward, the second letter is moved four steps backward and the third letter is moved four steps forward to obtain the corresponding letters of the next term.

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If you were travelling at 30 miles per hour how long would it take to travel a distance of 70 miles?

Time=distance/speed

Distance is 70 miles, speed is 30 mph

Time=70/30

As with the speed method of calculation the denominator must fit into 60 minutes.

Time=70/30=2.33

2.33*60=140=2 hr 20 min

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A B C D E and F are six members of a family.

One couple has parents and their children in the family.

A is a son of C and E is the daughter of A.

D is the daughter of F who is the mother of E.

How many females members are there in the family?

E is the daughter of A and F is the mother of E. So, A is the father of E and hence the husband of F. Now, D is a daughter of F. So, D and E are the daughters of A and F. Also, he is the son of C. Now, only B remains. Thus, B and C are the parents of A. Clearly the females in the families are: either B or C, F, D and E..

In following question, a number series is given with two term missing. Choose correct alternative

4,8,16,13,7,14, ? , ?

4,8,16,13,7,14, ? , ?

Next number is (1*n)+(sum of all digits)

So first tem is 4.

2nd Term = (1*4)+(0+4)= 8

3rd Term = (1*8)+(0+8)= 16

4th Term = (1*6)+(1+6) = 13

5th Term = (1*3)+(1+3)= 7

6th Term = (1*7)+(0+7)= 14

7th Term = (1*4)+(1+4)= 9

8th Term = (1*9)+(0+9) = 18.