In 1772 Sophia was thrice as jim but in 1775 Sofia was only twice as old as jim was .How many old was Sofia in 1784? question mark

Let's

in 1772.

Sofia age's = x jim age's =y

when Sofia was thrice as jim

x = 3 Y...( 1 )

but after 5 year Sofia was twice.

X + 5 = 2(y + 5)... 2

By substituting equations

x = 25

but after 12 years

in 1784 Sofia was: 37

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

Find out the incorrect number

1236, 2346, 3456, 4566, 5686

Find out the incorrect number

1236, 2346, 3456, 4566, 5686

The first digits of the numbers from the series 1, 2, 3, 4, 5;

the second digits from the series 2, 3, 4, 5,6;

the third digits from the series 3, 4, 5, 6;

while the last digit in each of the numbers is 6.

So, 5686 is wrong and must be replaced by 5676..

A + B means a is the son of B.

A- B means A is the waife of B.

A x B means A is the brother of B.

A Ã· B means A is the mother of B.

A= B means A is the sister of B.

What does P + R - Q means?

P + R -Qmeans, p is the son of a R who is the wife of Q i.e. Q is the father of P.

Hence, the answer is (a).

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