Number System ?125÷5x ?=6265 124 1452 1253 153 124 1452 1253 153 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1253
Number System The sum of the two numbers is 12 and their product is 35. What is the sum of the reciprocals of these numbers? 7/32 1/35 35/8 12/35 7/32 1/35 35/8 12/35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be a and b. Then,a + b = 12 and ab = 35.(a + b)/ab = 12/35= (1/b + 1/a) = 12/35Sum of reciprocals of given numbers = 12/35.
Number System 7589 - ? = 3434 11023 4155 4242 1123 11023 4155 4242 1123 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 7589 - x = 3434Then x = 7589 - 3434 = 4155
Number System Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number? N(N + 1) N(N + 1)/2 N2 + 1 N2 N(N + 1) N(N + 1)/2 N2 + 1 N2 ANSWER DOWNLOAD EXAMIANS APP
Number System The square root of 3 + “5 is : “3 /2 + 1/”2 “(5/2) + “(1/2) “5 /2 - 1/”2 “3 /2 - 1/”2 “3 /2 + 1/”2 “(5/2) + “(1/2) “5 /2 - 1/”2 “3 /2 - 1/”2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP “(5/2) + “(1/2)
Number System When (21)² is subtracted from the square of a number the answer obtained is 1584. What is the number ? 55 35 45 65 55 35 45 65 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x² - (21)² = 1584= x² - 441 = 1584 = x² = 1584 + 441 = 2025∴ x = √2025 = 45
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