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