Number System 75% of 250 - ?% of 380 = 54.5 35 31 33 39 35 31 33 39 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 The sum of two numbers is 165 and the difference between them is 9. What is the average of these two numbers ? 85.5 82.5 84.5 83.5 85.5 82.5 84.5 83.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 165x - y = 92x = 174 ∴ x = 87 and y = 78∴ x + y/2 = 165/2 = 82.5
Number System If a number is subtracted from its square we get 272. Find the number? 22 14 24 17 22 14 24 17 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 – x = 272 => x =17
Number System If 4 2/3 is subtracted form 10 1/2 and the difference is multiplied by 450, then what is the final answer? 2875 None of these 2675 2725 2875 None of these 2675 2725 ANSWER DOWNLOAD EXAMIANS APP
Number System In how many different ways can the letters of the word TEST' be arranged ? 12 16 8 10 12 16 8 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word TEST consists of 4 letters in which T comes twice ∴ Number of arrangements= 4!/2! = 4 x 3 x 2 x 1/2 x 1 = 12
Number System In how many different ways can be the letters of the word PENCIL be arranged among themselves ? 860 720 640 510 860 720 640 510 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total six letters are there and hence the number of arrangements = 6! = 6 x 5 x 4 x 3 x 2 x 1 = 720
EXAMIANS