Number System If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ? 124 179 146 163 124 179 146 163 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² - (83)² = 8487x² = 8487 + (83)²x² = 8487 + 6889x² = 15376Therefore, x² = 15376 x = 124
Number System The square root of 3 + “5 is : “3 /2 - 1/”2 “5 /2 - 1/”2 “3 /2 + 1/”2 “(5/2) + “(1/2) “3 /2 - 1/”2 “5 /2 - 1/”2 “3 /2 + 1/”2 “(5/2) + “(1/2) ANSWER EXPLANATION DOWNLOAD EXAMIANS APP “(5/2) + “(1/2)
Number System Three times the first of three consecutive odd integers is 3 more than twice the third. The third integer is: 13 9 11 15 13 9 11 15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the three integers be x, x + 2 and x+ 4.Then,3x = 2(x + 4) + 3x = 11Third integer = x + 4 = 15.
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 21 14 18 16 21 14 18 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 The sum of three consecutive multiples of 3 is 72. What is the largest number? 36 24 27 21 36 24 27 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be 3x, 3x + 3 and 3x + 6.Then,3x + (3x + 3) + (3x + 6) = 729x = 63x = 7Largest number = 3x + 6 = 27.
Number System In how many different ways can the letters of the word CORPORATION be arranged ? None of these 1326400 3326400 2326400 None of these 1326400 3326400 2326400 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP CORPORATION = 11 letters 'O' comes thrice,'R' twice.∴ total no. of ways = 111/3121 = 3326400
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