# Aptitude  Number series  Practice Q&A - Easy

11. 12345679 x 72 = ?

 88888888 888888888 898989898 9999999998

12. Which one of the following is the common factor of (4743 + 4343) and (4747 + 4347) ?

 (47 - 43) (47 + 43) (4743 + 4343) None of these

13. -84 x 29 + 365 = ?

 2436 2801 -2801 -2071

14. In a division sum, the divisor is 10 times the quotient and 5 times the remainder. If the remainder is 46, what is the dividend ?

 4236 4306 4336 5336

15. 4500 x ? = 3375

 $\dfrac{2}{5}$ $\dfrac{3}{4}$ $\dfrac{1}{4}$ $\dfrac{3}{5}$

16. 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 +$\dfrac{817}{1020}$

17. How many prime numbers are less than 50 ?

 16 15 14 18

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

 420 460 500 None of these

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

 8475 8500 8550 8525

20. Which of the following numbers is divisible by each one of 3, 7, 9 and 11 ?

 639 2079 3791 37911

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