Question 42
Select the option that will replace the question mark (?) in the given series.
77, 158, 207, 232, 241, ?
Solution
$$77+9^2\ =\ 77+81\ =\ 158$$
$$158+7^2\ =\ 158+49\ =\ 207$$
$$207+5^2\ =\ 207+25\ =\ 232$$
$$232+3^2\ =\ 232+9\ =\ 241$$
$$241+1^2\ =\ 241+1\ =\ 242$$
So 242 will come in place of the question mark.
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