SSC GD 25th Nov 2021 Shift-2

In how much time will a sum of money double itself at 12% p.a. simple interest?

$$\frac{0.2 \div \frac{1}{2} of \frac{2}{3} - 1 \times 2 \div 2}{0.2 \times 2 \div \frac{1}{2} of \frac{2}{3} - 2 of \frac{1}{2} \div \frac{1}{4}}$$ On simplification, the given expression gives the result as:

The average of the ages of a husband and his wife was 25 years at the time of their wedding. After 7 years, they have a
2-year old child. What is the average age of the family at present?

An article is sold for ₹452.20, after allowing three successive discounts of 20%, 30% and 5%. If a single discount of 55% is given on the marked price, then its selling price (in ₹) will be:

Divide 2310 people in three parties such that half in the first party, one-third in the second party and one-sixth in the third party are all equal.

The following sentence has been split into four segments. Identify the segment that contains a grammatical error.
Each of the students were / present for / the valedictory session / that night.

Select the option that can be used as a one-word substitute for the given group of words.
A person who helps willingly without being paid for it

Select the most appropriate meaning of the given idiom.
To take pains

Select the most appropriate option that can substitute the underlined segment in the given sentence. If there is no need to substitute it, select ‘No substitution required’.
Neither the chairman nor the directors has present.

Select the most appropriate meaning of the given idiom.
Child’s play