Number System How many numbers up to 100 are divisible by 7? 100 93 14 107 100 93 14 107 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 100/7 = 14 2/7 => 14 Numbers
Number System Find the least value of 3x + 4y if x2y3 = 6. 3 7 6 10 3 7 6 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 10
Number System If the numberator of a fraction is increased by 50% and denominator by 20% the fraction become 9/15. What was the original fraction ? 13/25 6/7 3/5 12/25 13/25 6/7 3/5 12/25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the fraction be x/yWe have 150x/120y = 9/15= x/y = 12/25
Number System 5358 * 51 = ? 273358 273348 273258 273268 273358 273348 273258 273268 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5358 * 51 = 5358 * (50 + 1) = 5358 * 50 + 5358 * 1= 267900 + 5358 = 273258
Number System The product of two natural numbers is 17. Then, the sum of the reciprocals of their squares is: 289/290 289 1/289 290/289 289/290 289 1/289 290/289 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 Twenty times a positive integer is less than its square by 96. What is the integer? Cannot be determined 20 24 30 Cannot be determined 20 24 30 ANSWER DOWNLOAD EXAMIANS APP
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