Question

How many Zeros can be formed by multiplying 10×20×30×40×…………….× 100

A 22 Correct Answer Incorrect Answer
B 14 Correct Answer Incorrect Answer
C 12 Correct Answer Incorrect Answer
D 10 Correct Answer Incorrect Answer
E 11 Correct Answer Incorrect Answer

Solution

10×20×30×40×…………….× 100 10×1 × 10×2 × 10×3 × 10×4 × …………….× 10×10 〖10〗^10 × 1×2×3×4×……..× 10 Now, if 〖10〗^1 = 1 zeroes 〖10〗^2 = 2 zeroes 〖10〗^3 = 3 zeroes Then, 〖10〗^10 = 10 zeroes ……………..(i) Now 1×2×3×4×……..× 10 10/5 = 2 zeroes ∴ Required number of Zeroes = 10+2 = 12 zeroes

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