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If abx -1 = bax -3, then x is equal to-

1. A 1
2. B 1/2
3. C 2
4. D 7/2

If x4 = 10, then x6 =?

1. A 1,000√√
2. B 100
3. C 100√10
4. D 10√10

What is the greatest positive integer n such that 2n is a factor of 1210?

1. A 10
2. B 12
3. C 16
4. D 20

102 is how many times of (0.01)3?

1. A 105
2. B 106
3. C 107
4. D 108

Of the following, which is the best approximation to √0.0026?

1. A 0.05
2. B 0.06
3. C 0.16
4. D 0.5

If 16(4a) = 1, find the value of a.

1. A -2
2. B 0
3. C 1/2
4. D 3

If x is not a negative number, what is the maximum possible value of 22 - 3x?

1. A 1
2. B 2
3. C 3
4. D 4

If x3 = 729 then what is x?

1. A 16
2. B 6
3. C 7
4. D 9

If 32a + b = 16a + b, then a =?

1. A -b
2. B 2b
3. C 3b
4. D b + 2

If the price of Hilsa fish is currently Tk.100 per kg, and the price tripples every months, how long will be untill the price of Hilsa is Tk.8100/kg?

1. A 1 year
2. B 13 years
3. C 2 years
4. D 5/2 years

Quantity A = (9/13)2 and Quantity B = (9/13)1/2

1. A Quantity A is equals Quantity B
2. B Quantity A is greater
3. C Quantity B is greater
4. D Relationship indeterminate

At a room temprature, backterium doubles in every 20 minutes. In 2 hours the total number of backterium from an initial number of 3 will be:

1. A 144
2. B 18
3. C 192
4. D 96