Multiple Choice Questions

30. [(–10) × (+ 9)] + (–10) is equal to

• (a) 100
• (b) –100
• (c) – 80
• (d) 80

29. –16 ÷ [8 ÷ (–2)] is equal to

• (a) –1
• (b) 1
• (c) 4
• (d) –4

28. If (–25) × 30 = –30 × x, then the value of x is

• (a) –25
• (b) 25
• (c) 30
• (d) None of these

27. Find the odd one out of the four options in the following:

• (a) (–2, 24)
• (b) (–3, 10)
• (c) (–4, 12)
• (d) (–6, 8)

26. Find the odd one out of the four options given below:

• (a) (–3, –6)
• (b) (+1, –10)
• (c) (–2, –7)
• (d) (–4, –9)

25. When the integers 10, 0, 5, – 5, – 7 are arranged in descending or ascending order, them find out which of the following integers always remains in the middle of the arrangement.

• (a) 0
• (b) 5
• (c) – 7
• (d) – 5

24. The next number in the pattern – 62, – 37, – 12, ……. is

• (a) 25
• (b) 13
• (c) 0
• (d) –13

23. Which of the following statements is not true?

• (a) When two positive integers are added, we always get a positive integer.
• (b) When two negative integers are added we always get a negative integer.
• (c) When a positive integer and a negative integer is added we always get a negative integer.
• (d) Additive inverse of an integer 2 is (–2) and additive inverse of ( –2) is 2.

22. On the number line, the value of (–3) × 3 lies on right hand side of

• (a) – 10
• (b) – 4
• (c) 0
• (d) 9

21. The value of 5 ÷ (–1) does not lie between

• (a) 0 and – 10
• (b) 0 and 10
• (c) – 4 and – 15
• (d) – 6 and 6

20. (–11) × 7 is not equal to

• (a) 11 × (–7)
• (b) –(11 × 7)
• (c) (–11) × (–7)
• (d) 7 × (–11)

19. (–10) × (–5) + (–7) is equal to

• (a) –57
• (b) 57
• (c) –43
• (d) 43

18. Which of the following is the multiplicative identity for an integer a?

• (a) a
• (b) 1
• (c) 0
• (d) –1

17. [(–8) × (–3)] × (–4) is not equal to

• (a) (–8) × [(–3) × (–4)]
• (b) [(–8) × (–4)] × (–3)
• (c) [(–3) × (–8)] × (–4)
• (d) (–8) × (–3) – (–8) × (–4)

16. (–25) × [6 + 4] is not same as

• (a) (–25) × 10
• (b) (–25) × 6 + (–25) × 4
• (c) (–25) × 6 × 4
• (d) –250

15. –35 × 107 is not same as

• (a) –35 × (100 + 7)
• (b) (–35) × 7 + (–35) × 100
• (c) –35 × 7 + 100
• (d) (–30 – 5) × 107

14. (–43) × (–99) + 43 is equal to

• (a) 4300
• (b) –4300
• (c) 4257
• (d) –4214

13. (–16) ÷ 4 is not same as

• (a) (–4) ÷ 16
• (b) – (16 ÷ 4)
• (c) 16 ÷ (–4)
• (d) –4

12. Which of the following does not represent an integer?

• (a) 0 ÷ (–7)
• (b) 20 ÷ (–4)
• (c) (–9) ÷ 3
• (d) (–12) ÷ 5

11. Which of the following is different from the others?

• (a) 20 + (–25)
• (b) (–37) – (–32)
• (c) (–5) × (–1)
• (d) (45) ÷ (– 9)

10. Which of the following shows the maximum rise in temperature?

• (a) 23° to 32°
• (b) –10° to +1°
• (c) –18° to –11°
• (d) –5° to 5°

9. If a and b are two integers, then which of the following may not be an integer?

• (a) a + b
• (b) a – b
• (c) a × b
• (d) a ÷ b

8. For a non-zero integer a which of the following is not defined?

• (a) a ÷ 0
• (b) 0 ÷ a
• (c) a ÷ 1
• (d) 1 ÷ a

7. If (–8) + (–8) + (–8) = p × (–8), then p is equal to

• (a) 2
• (b) 3
• (c) 1
• (d) 0

6. If we multiply six negative integers and six positive integers, then the resulting integer is

• (a) positive
• (b) negative
• (c) zero
• (d) None of these

5. If 23 × (–99) = 23 × (–100 + y), then the value of y is

• (a) 2
• (b) 3
• (c) 1
• (d) 0

4. If 23 × (–99) = 23 × m + 23 × n, then (m, n) is equal to

• (a) (100, –1)         
• (b) (100, 1)  
• (c) (–100, –1)  
• (d) (–100, 1)

3. When –16 is divided by q, the quotient is 4. The value of q is

• (a) 4
• (b) –4
• (c) –16
• (d) 16

2. If z × (–23) = –920, then z is equal to

• (a) 40
• (b) –40
• (c) –23
• (d) 23

1. If s = (–9) + (–11) and t = (–9) – (–11), then which among the following is true?

• (a) s > t
• (b) s < t  
• (c) s = t  
• (d) None of these