Question 21

What will be the next term in the following series?
C4X, F9U, I16R,

Solution

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C + 3 = F ==> F + 3 = I.
$$2^2\ =\ 4$$ ==> $$3^2\ =\ 9$$ ==> $$4^2\ =\ 16$$.
X - 3 = U ==> U - 3 = R.
Following this pattern, next term will be:
I + 3 = L
$$5^2\ =\ 25$$
R - 3 = O 
==> L25O i.e. Option A.

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