Number System In a division sum, the remainder is 0. As student mistook the divisor by 12 instead of 21 and obtained 35 as quotient. What is the correct quotient? 12 0 13 20 12 0 13 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number = (12 * 35) = 420Correct quotient = 420/21 = 20
Number System The product of two natural numbers is 17. Then, the sum of the reciprocals of their squares is: 290/289 289 1/289 289/290 290/289 289 1/289 289/290 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be a and b. Then,ab = 17, a = 1 and b = 17So, 1/a2 + 1/b2 = (a2 + b2)/a2 b2 = (12 + 172)/(1 * 17)2 = 290/289
Number System Find the number, when 15 is subtracted from 7 times the number, the result is 10 more than twice of the number 4 15 5 7.5 4 15 5 7.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.7x -15 = 2x + 10 => 5x = 25 => x = 5
Number System Supply the missing figure : 3, 11, 8, 16, 13 .... 18 21 12 18 28 21 12 18 28 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
Number System If the difference between a number and its three fifths is 62, what is the number ? 155 165 145 175 155 165 145 175 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x - 3x/5 = 62or x = 62 x 5/2 = 155
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. 549250 Rs. 507250 Rs. 519850 Rs. 536250 Rs. 549250 Rs. 507250 Rs. 519850 Rs. 536250 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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