Find the sum of the cubes of first 15 natural numbers. (1) 15400 (2) 14400 (3) 16800 (4) 13300
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Correct Option: BSum of cubes of first n natural numbers = [ n(n+1) ]2 ∴ Required sum = [ ( 15 x 16 ) / 2 ] 2
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Cubes 1 to 50 Table.. How do you find the sum of the cubes of the first n natural numbers?We know that sum of cubes of first n natural numbers is = (n(n+1)/2)2.
What is the sum of squares of first 15 natural numbers?1240. Q. The sum of squares of first n natural numbers is given by 16n(n+1)(2n+1) or 16(2n3+3n2+n).
What is the formula to find sum of cubes?The sum of cubes formula is one of the important algebraic identity. It is represented by a3 + b3 and is read as a cube plus b cube. The sum of cubes (a3 + b3) formula is expressed as a3 + b3 = (a + b) (a2 - ab + b2).
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