निम्नांकित

Find the value of 6 + 66 + 666 + 6666 +hellip;hellip;hellip;hellip;.. + n terms.

1. `(2)/(3) ((10 xx (10^(n)- 1))/9 - n)`

2.

Select the option that gives decimal numbers 0.24, 1.23, 0.0881, and 2.66 arranged in ascending order.

Find the number of zeroes in the product of 60 × 61 × 62 × ........ × 80?

What is the place value of 3 in 3678921410.

1. 3 ×10⁴

2. 3 ×10⁷

3. 3 ×10⁵

4. 3 ×10⁹

Which of the following is a Prime Number?

Find the last digit of (12¹²³ – 1).