Number System What is the least number, which is perfect square but contains 2700 as its factor? 1800 10800 2700 5400 1800 10800 2700 5400 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 900 * 3 * 3 = 8100
Number System On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is: 48619 47719 47649 47619 48619 47719 47649 47619 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP By hit and trail, we find that47619 * 7 = 333333.7) 333333 (47619 333333---------------- 0
Number System Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is: 4 10 5 6 4 10 5 6 ANSWER DOWNLOAD EXAMIANS APP
Number System Two numbers are in the ratio 3:5. If 9 be subtracted from each, they are in the ratio of 9:17. The first number is: 27 30 18 36 27 30 18 36 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (3x-9):(5x-9) = 9:17 x = 12 => 3x = 36
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.80 Rs.100 Rs.90 Rs.85 Rs.80 Rs.100 Rs.90 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9/12 = 3/4 * 900 = 675 650 ------------- 251/4 -------- 251 --------- ? => Rs.100
Number System How many times the keys of a typewriter have to be pressed in order to write first 400 counting numbers? 1092 1200 1192 1082 1092 1200 1192 1082 ANSWER DOWNLOAD EXAMIANS APP
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