Number System The difference between 72% of a number and 49% of the same number is 575. What is 9% of that number ? 225 295 275 245 225 295 275 245 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x.Therefore, 72% of x - 49% of x = 575Therefore, (72 - 49)% of x = 575Therefore, 9% of x = 575/23 x 9 = 225
Number System Three numbers which are co-prime to one another are such that the product of the first two 551 and that of the last two is 1073. The sum of the three numbers is 74 85 93 110 74 85 93 110 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 85
Number System The sum of a number and its reciprocal is one-eighth of 34. What is the product of the number and its square root? 32 27 8 None of these 32 27 8 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,x + 1/x = 34/8 8x2 - 34x + 8 = 0 4x2 - 17x + 4 = 0 (4x - 1)(x - 4) = 0 x = 4required number = 4 * √4 = 4 * 2 = 8.
Number System What is the sum of all even numbers from 1 to 701? 122550 122850 122500 123850 122550 122850 122500 123850 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 700/2 = 350350 * 351 = 122850
Number System If the L.C.M of two numbers is 750 and their product is 18750, find the H.C.F of the numbers. 50 30 25 125 50 30 25 125 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP H.C.F = (Product of the numbers) / (Their L.C.M) = 18750/750 = 25.
Number System A man engaged a servant on the condition that he would pay him Rs.900 and a uniform after one year service. He served only for 9 months and received uniform and Rs.650, find the price of the uniform? Rs.85 Rs.90 Rs.100 Rs.80 Rs.85 Rs.90 Rs.100 Rs.80 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9/12 = 3/4 * 900 = 675 650 ------------- 251/4 -------- 251 --------- ? => Rs.100
EXAMIANS