Problem on numbers mcqs with answers pdf for Mathematics Preparation. Problem on numbers mcqs pdf download and Mathematics mcqs for entry test with answers pdf.

## If ‘a’ denotes the unknown value and is increased by 2, the result will be 12 then the equation for this statement will be _____ ?

A. a = 12 + 2

B. a – 2 = 12**C. a + 2 = 12**D. 2a = 12## Four handbags and three school bags costs $2000 and cost of handbag is thrice as much as schoolbags. If cost of school bag is ‘a’ then the derived equation will be _____ ?

A. 3(4a) + 3(3a) = 2000

B. 3(4a) – 3(3a) = 2000

C. 3(4a) – 3a = 2000**D. 3(4a) + 3a = 2000**## If four times of certain number ‘a’ is ten more than thrice the number then the equation derived for this statement can be written as ____ ?

A. 4a = 3a – 10

**B. 4a = 3a + 10**C. 3a = 4a + 10

D. 3a = 4a – 10## If the sum of two numbers is 33 and their difference is 15, the smaller number is _____ ?

A. 14

B. 18**C. 9**D. 12Then, x + y = 33 …(i)

and x – y = 15 …(ii)

Solving (i) and (ii), we get : x = 24, y = 9.

∴ Smaller number = 9.## Sum of two numbers is 25 and their differenee is 13. Find their product _____ ?

A. 315

B. 325**C.**D. 104**114**Let the numbers be x and y. Then, x + y = 25 and x – y = 13.

4xy = (x + y)2 – (x – y)2 = (25)2 – (13)2 = 625- 169 = 456

=> xy = 114.## If the sum of a number and its square is 182, what is the number?

**A. 13**B. 25

C. 15

D. 97Let the number be x.

Then, x + x^{2}= 182 x^{2}+ x – 182 = 0

(x + 14) (x – 13) = 0 x = 13.## Three numbers are in the ratio of 3 : 4 : 6 and their product is 1944. The largest of these numbers is ______ ?

**A. 18**B. 12

C. 6

D. 34Then, 3x x 4x x 6x = 1944 72x

^{3}= 1944

x^{3}= 27 ,=> x = 3

∴ Largest number = 6x = 18,## Sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is ______ ?

A. 10

B. 15**C. 20**D. 30## Find the number which when multiplied by 15 is increased by 196 ?

A. 37

**B. 14**C. 20

D. 13## A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is : ______ ?

A. 12

B. 34

C. 18**D. 24**