Instructions

What should come in place of the question mark (?) in the following number series ?

Question 123

121, 144, 190, 259, ?, 466

Solution

Multiples of 23 are added.

121 $$+ 23 \times 1$$ = 144

144 $$+ 23 \times 2$$ = 190

190 $$+ 23 \times 3$$ = 259

259 $$+ 23 \times 4$$ = 351

351 $$+ 23 \times 5$$ = 466

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