The sum of age 5 children born at the interval of 2 year each is 40 year. Find out the age of eldest child?

let's age of youngest child = x

Then the age of 5 children can be written as x,( x + 2) ,(X + 4 ),(x + 6) and( X + 8).

Age of elders child = X + 8

Then ,

X + (X + 2 )+ (X+ 4) +( X + 6) + (X + 8) = 40

5 X + 20 = 40

5 X = 40 - 20

X = 20 / 5

X = 4

Age of elders child = X + 8

4 + 8 = 12.

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

1, 2, 3, 6, 9, 18, x , 54

1, 2, 3, 6, 9, 18, x , 54

The numbers are alternatively multiplied by 2 and 3/2.

So, 1 X 2 = 2, 2 X 3/2 = 3,

3 X 2 = 6, 6 X 3/2 = 9,

so missing number = 18 X 3/2 = 27.

Find the wrong number in the series:

7, 28, 63, 124, 215, 342, 511

7, 28, 63, 124, 215, 342, 511

Clearly, the correct sequence is

(23 - 1), (33 - 1), (43 - 1), (53 - 1), (63 - 1), (73 - 1), (83 - 1).

So 28 is wrong and should be replaced by (33 - 1) i.e. 26.

Hence, the answer is (B)..

Salesman, engineer and accountant . There are two married couple,s in the family . De, the salesman is married to the lady teacher. The doctor is married to the lawyer. F ,the accontent is the son of B and brother of E. C, the lawyer is the daughter in law of A. E is the unmarried engineer. A is the grandmother of F.

What is the profession of B.

C is the daughter in law of A Who is the grandmother of means C is the mother of F. But F is the son of B. So, B is C's husband. But C, the lawyer,is married to the doctor.So,B is the docter.F, the Accountant, will be the son of B and C.E is the unmarried engineer. So, the other married couple can be that of grandmother of F i.e. A, and D.But D, the sale man, is married to the lady teacher. So, D the salesman is the grandfather of F father of B and the husband of A , the lady teacher. Clearly, B is the doctor..

There are six children
playing football namely A, B, C, D, E and F.

A and E are brothers. F is the sister of E. C is the only son
of A's uncle.

B and D are the daughters of the brother of C's father

How many female players are there?

Option (B)

As given, A and E are brothers.

Hence both are males. F is sister of E and hence female. C is the son and hence male.

B and D are daughters and hence female.

Thus, there are three females.

So, the answer is (b).

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