Breaking News
Home / Amcat / AMCAT Maths Numbers, Decimal fractions Questions & Answers

# AMCAT Maths Numbers, Decimal fractions Questions & Answers

## AMCAT Maths Numbers, Decimal fractions and power Questions & Answers

1. There are four prime numbers written in ascending order of magnitude. The product of first three is 385 and that of last three is 1001. Find the first number:

A): 5
B): 7
C): 11
D): 17

2. A rectangular courtyard 3.78 meters long and 5.25 meters wide is to be paved exactly with square tiles ,all of the same size. What is the largest size of the tile which could be used for the purpose:

A): 14 cm
B): 21 cm
C): 42 cm
D): None of these

3. The largest four digit number which is a multiple of 8, 10,12 and 15 is:

A): 120
B): 9600
C): 9840
D): 9960

4. Rajeev multiplies a number by 10, the log (to base 10) of this number will change in what way:

A): Increase by 10
B): Increase by 1
C): Multiplied by 10
D): None of these

5. The unit’s digit in the product (771 x 659 x 365) is:

A): 1
B): 2
C): 4
D): 6

6. 1.52 * 0.02251/2 = ?

A): 0.0375
B): 0.3375
C): 3.275
D): 32.75

7. If x1/2 / 4411/2 = 0.02, the value of x is:

A): 0.1764
B): 1.764
C): 1.64
D): 2.64

8. The value of 21/2 upto three places of decimal is:

A): 1.41
B): 1.412
C): 1.413
D): 1.414

9. The value of (8-25- 8-26) is:

A): 7 x 8-25
B): 7 x 8-26
C): 8 x 8-26
D): None of these

10. If 22n-1 = (1 / 8n-3) then the value of n is:

A): 3
B): 2
C): 0
D): -2

11. If 2x = 3y = 6-z, then (1/x + 1/y + 1/z) is equal to:

A): 0
B): 1
C): 3/2
D): -0.5

12. The roots of the equation 4x-3*2x+2+32=0 would include:

A): 2, 3
B): 1, 2, 3
C): 1, 2
D): 4, 8

13. If ax =b, by=c and cz =a, then the value of xyz is:

A): 0
B): 1
C): 2
D): 3

14. If x = 1+21/2 and y=1-21/2, then x2+y2 is:

A): 2
B): 3
C): 6
D): 0

15. If 4x+3 = 2x+7, then the value of x is:

A): 3
B): 2
C): 1
D): None of these

16. 2x+y = 2*(2)1/2 and 2x-y = 21/2,the value of x is:

A): 1
B): 2
C): 3
D): 4

17. If x = 8, y = 27, the value of (x4/3+y2/3)1/2 is:

A): 5
B): 6
C): 7
D): 8

18. If xy = yx and x = 2y, the value of y is:

A): 1
B): 2
C): 3
D): 4

19. If 2x * 3y = 18 and 22x * 3y= 36, the value of x is:

A): 0
B): 1
C): 2
D): 3

20. What is the value of 500?

A): 0
B): 1
C): 50
D): None of these