Find the wrong number in the series:

3, 8, 15, 24, 34, 48, 631

3, 8, 15, 24, 34, 48, 631

The difference between consecutive terms of the given series are respectively 5, 7, 9, 11 and 13.Clearly, 34 is a wrong number and must be replaced by (24 + 11) i.e. 35.

Hence, the answer is (C)..

If x and y are positive integers such that (3x + 7y) is a multiple of 11, then which of the following will be divisible by 11 ?

By hit and trial, we put x = 5 and y = 1 so that (3x + 7y) = (3 x 5 + 7 x 1) = 22, which is divisible by 11.

(4x + 6y) = ( 4 x 5 + 6 x 1) = 26, which is not divisible by 11;

(x + y + 4 ) = (5 + 1 + 4) = 10, which is not divisible by 11;

(9x + 4y) = (9 x 5 + 4 x 1) = 49, which is not divisible by 11;

(4x - 9y) = (4 x 5 - 9 x 1) = 11, which is divisible by 11.

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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. ?, ayw, gec, mki, sqo

Each term in the series consists of alternate letters in reverse order. The first letter of each term and the last letter of the next term are also alternate.

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If A+ B means A is the sister of B.

A - B means A is the brother of B.

A x B means A is the daughter of B.

Which of the following shows the relation that E is the maternal uncle of D?

Clearly, E is the maternal uncle of D means D is the daughter of sisters (say F) of E.i .e.

D x F+E.

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Hence the answer is (C).

In following alphabet series , one term missing as shown by question mark . Choose missing term from options.

Z, U, Q, ?, L

The first, second, third,... letters of the series are respectively moved one, two, three,... steps forward to obtain the successive terms..