Aptitude  Number series  Practice Q&A

1. 9+$\dfrac{3}{4}$+7+$\dfrac{2}{17}$-$\left(9+\dfrac{1}{15}\right)$=?

 7 +$\dfrac{719}{1020}$ 9 +$\dfrac{817}{1020}$ 9 +$\dfrac{719}{1020}$ 7 +$\dfrac{817}{1020}$

2. $\left(1-\dfrac{1}{n}\right)$+$\left(1-\dfrac{2}{n}\right)$+$\left(1-\dfrac{3}{n}\right)$+.....up to n terms=?

 $\dfrac{1}{2}$n $\dfrac{1}{2}$(n - 1) $\dfrac{1}{2}$n(n - 1) None of these

3. On dividing 2272 as well as 875 by 3-digit number N, we get the same remainder. The sum of the digits of N is:

 10 11 12 13

4. A boy multiplied 987 by a certain number and obtained 559981 as his answer. If in the answer both 9 are wrong and the other digits are correct, then the correct answer would be:

 553681 555181 555681 556581

5. How many prime numbers are less than 50 ?

 16 15 14 18

6. When a number is divided by 13, the remainder is 11. When the same number is divided by 17, then remainder is 9. What is the number ?

7. 51 + 52 + 53 + ... + 100 = ?

 2525 2975 3225 3775

8. $\left(800 ÷ 64\right)$ x $\left(1296 ÷36\right)$ = ?

 420 460 500 540

9. Which natural number is nearest to 8485, which is completely divisible by 75 ?

 8475 8500 8550 8525

10. If the number 42573 * is exactly divisible by 72, then the minimum value of * is:

 4 5 6 7

*Click on the QNo to display a Question.

 Total Ans

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