Question : Which is the greatest number of four-digit divisible by 12, 25, and 45?
Option 1: 9890
Option 2: 9999
Option 3: 9800
Option 4: 9900
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Correct Answer: 9900
Solution : LCM of 12,25 and 45 = 900 Largest 4-digit number = 9999 9999 = 900 × 11 + 99 The greatest number divisible by 12, 25, and 45 = 9900 Hence, the correct answer is 9900.
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Question : What is the greatest four-digit number which when divided by 3 and 4 leaves remainder 2 in each case?
Option 1: 9994
Option 2: 9996
Option 3: 9998
Option 4: 9995
Question : Which is the smallest three-digit number which when increased by 5 becomes divisible by both 2 and 3?
Option 1: 102
Option 2: 105
Option 3: 103
Option 4: 108
Question : If the number formed by the last two digits of a three-digit integer is an integral multiple of 6, the original integer itself will always be divisible by:
Option 1: 6
Option 2: 3
Option 3: 2
Option 4: 4
Question : The ratio of a two-digit number and the sum of the digits of that number is 4 : 1. If the digit at the unit's place is 3 more than the digit at the ten's place, then the number is:
Option 1: $47$
Option 2: $69$
Option 3: $36$
Option 4: $25$
Question : The average of three numbers of which the greatest is 16 is 12. If the smallest is half of the greatest, the remaining number is:
Option 1: 12
Option 2: 8
Option 3: 14
Option 4: 10
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