Number System When (21)² is subtracted from the square of a number the answer obtained is 1584. What is the number ? 65 45 55 35 65 45 55 35 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
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 14 18 21 16 14 18 21 16 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 Find the number of factors of 300 excluding 1 and itself. 15 18 16 14 15 18 16 14 ANSWER DOWNLOAD EXAMIANS APP
Number System The product of two successive numbers is 4556. Which of the following is the larger of the two numbers? 63 68 67 78 63 68 67 78 ANSWER DOWNLOAD EXAMIANS APP
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? 4 None 6 2 4 None 6 2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
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