Number System The 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: 40 None of these 30 20 40 None of these 30 20 ANSWER DOWNLOAD EXAMIANS APP
Number System Two numbers have a H.C.F of 16 and a product of two numbers is 2560. Find the L.C.M of the two numbers? 170 160 150 140 170 160 150 140 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP L.C.M of two numbers is given by(Product of the two numbers) / (H.C.F of the two numbers) = 2560/16 = 160.
Number System What is the difference between the local value of 7 and 5 in the number 2574? 403 570 413 430 403 570 413 430 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 500 – 70 = 430
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? 4 2 None 6 4 2 None 6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
Number System When 102 is reduced from a number, the number gets reduced by 88%. What is that number ? 650 750 850 550 650 750 850 550 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 850
Number System If the difference between a number and its 2/5 is 240, find the number. 480 400 360 440 480 400 360 440 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore x - 2x/5 = 240, Therefore, 3x/5 = 240Therefore, x = 240x5/3 = 400
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