1) A heap of stones can be made up into groups of 21 but when made up into groups of 16,20,25 and 45 there are three stones left in each case. How many stones at least there can be in the heap:
- 7203
- 7200
- 7500
- 7000
2) Find the least number which, when divided by 35 leaves remainder 25, when divided by 45 leaves remainder 35, and when divided by 55 leaves remainders 45.
- 2000
- 2515
- 3005
- 3455
3) find the lease number which when divided by 8,12 and 16 leaves 3 as remainder in each case but when divided by 7 leaves no remainder:
- 140
- 147
- 150
- 160
4) What is the least multiple of 7 which leaves a remainder 3 when divided by 4,12, 16 is:
- 44100
- 50000
- 55125
- None of these
5) What is the LCM of 15, 45,60?
- 60
- 90
- 180
- 810
6) Which is the prime number, then n is:
- Always a rational number
- Always a natural number
- Always an irrational number
- Sometimes a natural number and sometimes an irrational number
7) The Highest common factor of 28, 56, 40 is
- 4
- 10
- 8
- 14
- 810
8) The H.C.F of the expression x4 + 3x2 – 4 and x4 -4x2 + 3 is:
- X+1
- X-1
- (x2-1)
- X2-3
- 810
9) The LCM of 15, 24, 30, 40 is:
- 360
- 240
- 120
- 480
- 810
10) the sum of two numbers is twice their difference. If one of the number is 10, the other is:
- 30 or -31/3
- 30
- 31/3
- 30 or 31/2
- None of these
11) 2-2-2×2 is equal to:
- -1
- -5
- 0
- +4
- None of these
12) 26- [5-(12-3)] = ?
- 16
- 8
- 18
- 24
- None of these
13) 9/10 x 2/8 + 1/6 = ?
- 47/120
- 3/8
- 7/10
- 9/10
14) 254 + 127 x 0.2 =?
- 4
- 1
- 4
- 40
15) 8 ÷ 8 x 8 x 8 x -8 =?
- 56
- 0
- 512/64
- 504
16) 7/? = 2/26
- 14/26
- 12/14
- 91
- 182
17) 0.96 ÷ 1.6 + 6 = ?
- 6
- 01
- 06
- 6
18) What is the highest number of four digit which will leave remainder of 1 when divided by any number 5,9,12, 15 or 18?
- 9901
- 8901
- 7962
- 4424
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