Number System 36% of 850+? % of 592 = 750 75 12.5 50 25 75 12.5 50 25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
Number System The product of two natural numbers is 17. Then, the sum of the reciprocals of their squares is: 289 289/290 290/289 1/289 289 289/290 290/289 1/289 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 On dividing number by 357, we get 39 as remainder. On dividing the same number by 17, what will be the remainder? 5 3 0 11 5 3 0 11 ANSWER DOWNLOAD EXAMIANS APP
Number System (3² x 4² x 5) ÷ 36 = (?)² - 80 14 12 10 16 14 12 10 16 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10
Number System The difference between 78% of a number and 59% of the same number is 323. What is 62% of that number ? Rs. 926 Rs. 1054 Rs. 945 Rs. 986 Rs. 926 Rs. 1054 Rs. 945 Rs. 986 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.78% of x - 59% of x = 323= 78x - 59x/100 = 323= 19x/100 = 323∴ x = 323 x 100/19 = 1700= 62% of 1700 = 1700 x 62/100 = 1054
Number System The product of two consecutive odd numbers is 4095 What is the greater number ? 61 74 65 69 61 74 65 69 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the two consecutive odd numbers be 2x - 1 and 2x + 1.(2x - 1) (2x - 1) = 4095= 4x² - 1 = 4095= 4x² = 4096= x² = 1024∴ x = 32∴ The numbers are 63 and 65.Greater number = 65
EXAMIANS