Question

The number of zeros at the end of the product of the expression 10 $\times$ 100 $\times$ 1000 $\times$ 10000 $\times$ . . . 10000000000 is:

• A. 10
• B. 100
• C. 50
• D. 55

Answer 1

The correct option is D 55

10 $\times$ 100 $\times$ 1000 $\times$. . . 10000000000
${10}^1\times {10}^2\times {10}^3\times \cdots \times {10}^{10}={10}^{(1+2+3{+}_{+}10)}={10}^{55}$
Hence (d) is the correct option.