In following questions, one term in number series is incorrect.

Find out the incorrect number 15, 16, 22, 29, 45, 70

Find out the incorrect number 15, 16, 22, 29, 45, 70

The pettern is + 1, + 4, + 9, + 16, + 25,.... i.e. + 1

So, 22 is wrong and must be replaced by (16 + 4) i.e. 20..

Peter introduces David as the son of the only brother of his father's wife.

How is Peter related to David?

The relation may be analyed as follows:

Father's wife........ Mother

Mother's brother.....Uncle

Uncle's son ........ Cousin

So, David is Peter's uncle.

So option no. 1 is correct.

In a family, there are 6 member A, B, C, D, E and F. A and B are married couple, A being the male member, D is only son of C, who is brother of A. E is the sister of D. B is daughter in law of F, whose husband has died How is F related to A?

A is male and married to B. So, A is husband and B is a wife. C is brother of A. D is a son of C.E, who is sister of D will be daughter of C. B is the daughter in law of F whose husband has died means F ia the mother of A. Clearly, F is mother of A..

Two person A & B removed from P to Q which are at a distance of 15 kilometres at 6 and 9 km respectively.B reacges Q and immediately return and met A at R. Find distance from P to R.

Total distance travelled by both=30

Ratio of speed= 9 :3

PR= 2/2+3*30=12 km

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Salesman, engineer and accountant. There are two married couples in the family. D, the salesman is married to the lady teacher. The doctor is married to the lawyer. F, the accountant 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 A.

C is the daughter in law of A who is the grandmother of F 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 doctor. 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 salesman, 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. A is the lady teacher..

Find the next number in the following sequence:

2, 5, 10, 17, 26...?

2, 5, 10, 17, 26...?

Each term is 1 more than a square. That is, the pattern is given by:

n = 1, 2, 3, 4, 5

n

n

So, the n

n

Look at this series: 31, 29, 24, 22, 17, . . .

What number should come next?

What number should come next?

This is a simple alternating subtraction series, which subtracts 2, then 5.

Rule = (first number - 2), (second number - 5), (third number - 2), (fourth number - 5)...

Now The series is 31, 29, 24, 22, 17, . . .

(31 - 2 = 29), (29 - 5 = 24), (24 - 2 = 22), (22 - 5 = 17), (17 - 2 = 15)...

So the answer is 15..