Number System Four-fifth of a number is 10 more than two-third of the same number. What is the number? 35 91 89 75 35 91 89 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
Number System 735 chocolates were distributed equally among children in such a way that the number of chocolates received by each child is 60% of the total number of children. How many chocolates did each child rec 16 14 18 21 16 14 18 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number of children be 'x' Therefore, each child will receiveX x 60/100 = 3x/5 chocolates∴ X x 3x/5 = 735∴ x² x 735x5/3 = 1225∴ x = 1225 = 35∴ Number of chocolates = 3x/5 = 21
Number System The number of prime factors of (6)10×(7)17×(55)27 61 91 41 101 61 91 41 101 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 91
Number System Two-third of a positive number and 25/216 of its reciprocal are equal. The number is: 25/144 5/12 144/25 12/5 25/144 5/12 144/25 12/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,2/3 x = 25/216 * 1/xx2 = 25/216 * 3/2 = 25/144 x = 5/12
Number System If x + y = 61 and xy = 888, What is the value of x²+ y² ? 1945 1975 1955 1965 1945 1975 1955 1965 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Because (x + y)² = x² + y² + 2xy∴ x² + y² = (x + y)² - 2xy∴ x² + y² = (61)² - 2 x 888= 3721 - 1776 = 1945
Number System A plot of 650 sq ft is available at the rate of Rs 6500 per sq ft. If 13% of the total cost of the plot is to be paid for booking the plot, what is the booking amount, (in Rs) ? Rs. 507250 Rs. 536250 Rs. 519850 Rs. 549250 Rs. 507250 Rs. 536250 Rs. 519850 Rs. 549250 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total cost of plot= 650 x 6500 = 4225000Booking amount = 13% of (4225000) = 4225000 x 13/100 = 549250
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