Number System - Aptitude MCQ Questions and Solutions with pdf 3

11 . The sum of the digits of two-digit number is 10, while when the digits are reversed, the number decrease by 54. Find the changed number.

• 45
• 34
• 23
• 28

Answer : [28]

12 . If 381A is divisible by 9, find the value of the smallest natural number A?

• 5
• 4
• 3
• 6

Answer : [6]


13 . If A381 is divisible by 11, find the value of the smallest natural number A?

• 4
• 3
• 2
• 7

Answer : [7]

14 . The greatest number which will divides: 4003, 4126 and 4249, leaving the same remainder in each case: 45 41 56 58 Answer : [41] 15. A Forester wants to plant 44 Apples tree, 66 Banana trees and 110 Mango trees in equal rows (in terms of number of trees). Also, he wants to make distinct rows of tree (i.e. only one type of tree in one row). The number of rows (minimum) that required is: 12 23 10 14 Answer : [10] 16 . There are 154 beads in a Rosary and all are coloured either RED or BLUE or GREEN. The number of blue ones is three less than red and five more than green. The number of Red beads are: 45 44 55 56 Answer : [55] 17 . Recently, a small village, in Tamilnadu where only male shepherd reside with four sheep each, was devastated by Tsunami waves. Therefore 8 persons and 47 sheep were found to be dead and the person who luckily survived, left the village with one sheep each since 21 sheep were too injured to move so have left on their on luck, in the village. The number of sheep which were earlier in the village was? 120  sheep 90 sheep 180 sheep 80 sheep Answer : [80 sheep] 18 . A boy appeared in CAT for four consecutive year years, but coincidentally each time his net score was 75. He told me that there was fraction{1}/{3}rd negative marking for every wrong answer and 1 mark was allotted for every correct answer. He has attempted all the questions every year, but certainly some answers have been wrong due conceptual problem. Which is not the total number of questions asked for CAT in any year, in that period? 120 178 150 631 Answer : [150] 19 . The square of a number greater than 1000 that is not divisible by three, when divided by three, leaves a remainder of ? 2 always 1 always 0 Cannot determined Answer : [1 always] 20 . Three friends returning from a movie stopped to eat at a restaurant. After dinner they paid their bill and noticed a bowl of mints at the front counter. Sita took 1/3 of the mints but returned four because she had a monetary pang of guilt. Fatima then took 1/4 of what was left but returned three for similar reasons. Eswari then took half of the remainder but threw two back into the bowl. The bowl had only 17 mints left when the raid was over. How many mints were originally in the bowl? 45 48 56 89 Answer : [48]