Instructions

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

Question 123

130, 139, 155, 180, 216, (?)

Solution

Squares of natural number starting from 3 are added

130 $$+ 3^2$$ = 139

139 $$+ 4^2$$ = 155

155 $$+ 5^2$$ = 180

180 $$+ 6^2$$ = 216

216 $$+ 7^2$$ = 265

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