Question 15

If $$n^2 = 123456787654321$$, what is $$n$$?

Solution

Observe the pattern given below.
$$11^2 = 121$$
$$111^2 = 12321$$
$$1111^2 = 1234321$$ and so on.

So, $$11111111^2 = 123456787654321$$


Create a FREE account and get:

  • All Quant CAT complete Formulas and shortcuts PDF
  • 35+ CAT previous year papers with video solutions PDF
  • 5000+ Topic-wise Previous year CAT Solved Questions for Free

cracku

Boost your Prep!

Download App