Number System What number should replace both the question marks (?) in the following question ? 85 82 84 83 85 82 84 83 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 84
Number System The difference between 35% of a number and 18% of the same number is 93.5 then what is the 40% of that number ? 232 225 245 220 232 225 245 220 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Diff = (35 - 18)% of x = 93.517x/100 = 93.5Therefore, x = 550Therefore, 40% of 550 = 220
Number System 7.98 x 3.75 + 1.28 x 15.5 = ? 48.765 49.765 47.765 46.765 48.765 49.765 47.765 46.765 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 29.925 + 19.84 = 49.765
Number System The difference between a two-digit number and the number obtained by interchange the two digits of the number is 27. If the sum of the two digits of the number is 13, what is their product ? 38 40 37 39 38 40 37 39 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10x + y.∴ 10x + y - (10y + x) = 27or 9x - 9y = 27∴ x - y = 3 .......(I)x + y = 13 .......(II)From eqn (I) and (II)x = 8 and y = 5.So the number = 85Therefore, product = 8 x 5 = 40
Number System 75% of 250 - ?% of 380 = 54.5 39 33 35 31 39 33 35 31 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 250 x 75/100 - 380 x ?/100 = 54.5= 250 x 75 - 380 x ?= 54.5 x 100= 18750 - 380 x ?= 5450= 380 x? = 18750 - 5450= 13300= ? = 13300/380 = 35
Number System If the product of two successive positive integers is 4692, what is the smaller number ? 68 70 64 66 68 70 64 66 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∵ 68 x 69 = 4692
EXAMIANS