Correct Answer: 21 years

Solution : Let the sum be $P$.
Total amount for 7 years = $2P$
Simple Interest for 7 years = $2P – P$ = $P$
If total amount = $4P$,
Simple Interest = $4P-P$ = $3P$
Since in 7 years interest is $P$ then $3P$ interest

Correct Answer: The particles of the solute settle down at the bottom when the solution is kept undisturbed.

Solution : The incorrect statement is The particles of the solute settle down at the bottom when the solution is kept undisturbed.

Filtration is not able to extract the solute particles from

Correct Answer: ZPKYVR

Solution : Given:
SUNDAY : RWKHVE :: ANNUAL : ?

Subtract and add consecutive natural numbers alternately to each letter of SUNDAY to obtain the required code –
S – 1 = R; U + 2 = W; N – 3 = K; D + 4 =

Correct Answer: 58

Solution : Given:
42, 53, 46, ?, 53, 66

Follow the pattern to obtain the next term.

So, 58 is the missing term in the given series. Hence, the first option is correct.

Correct Answer: Abhijit Banerjee

Solution : The correct answer is Abhijit Banerjee.

Abhijit Banerjee has co-authored the book titled "Good Economics For Hard Times: Better Answers To Our Biggest Problems". He is an Indian-American economist, born in Mumbai, who won the Nobel Prize in Economics in 2019. The book

Correct Answer: aba

Solution : Given:
ababb_abab_aababb_

To fill the series, we have to divide the series into equal parts – ababb_ / abab_a / ababb_
Let's check the options –
First option: bab; ababbb / ababaa / ababbb (No repeated pattern has been found.)
Second

Correct Answer: gift of the gab

Solution : The correct choice is the fourth option.

The idiom gift of the gab is an idiomatic expression that means the ability to speak eloquently and persuasively. In the context of the sentence, it perfectly captures the idea of possessing a remarkable talent

Correct Answer: 30 cm

Solution :
Given: O is the centre of a circle.
AB = 16 cm is a chord of the given circle and AB is at a distance of 15 cm from O. Another chord CD is at a distance of 8 cm from O.
We join

Correct Answer:

Solution : Given:

In the above–given figure series, the pattern is as follows –
1. The numbers 6 and 9 appear alternatively.
2. The movement of symbols/ numbers is as follows –
6 / 9 – Top right→Top left→Bottom centre→Top right
@ – Bottom centre→Top right→Top left→Bottom centre

Correct Answer: 8 cm

Solution :
OE = 3 cm
OC = OD = 5 cm
We know tangent is perpendicular to the radius at its point of contact with the circle.
So, OE $\perp$ CD
Using Pythagoras theorem in $\triangle$ EOC,
CE² = OC² – OE²