17. What is the value of x so that (2–1 + 4–1 + 6–1 + 8–1)x = 1?
- (A) 1
- (B) 0
- (C) –1
- (D) 2
16. Find the value of x–3 if x = (100)1–4 ÷ (100)0?
- (A) 1/1000000000
- (B) 1000000000
- (C) 1/1000000
- (D) 1000000
15. By what number should we multiply (–29)0 so that the product becomes (+29)0?
- (A) 0
- (B) 1
- (C) –1
- (D) None of these
14. By what number should (–15)–1 be divided so that quotient may be equal to (–15)–1?
- (A) 0
- (B) 1
- (C) –1
- (D) None of these
13. What is the multiplicative inverse of (–7)–2 ÷ (90)–1?
- (A) (–7)–2 ÷ (90)–1
- (B) (90)–1 ÷ (–7)–2
- (C) (–7)–1 ÷ (90)–2
- (D) (90)–2 ÷ (–7)–1
12. If 53x–1 ÷ 25 = 125, find the value of x.
- (A) 2
- (B) 3
- (C) 4
- (D) 5
11. How many times of 30 must be added together to get a sum equal to 307?
- (A) 30
- (B) 306
- (C) 303
- (D) 300
10. If 2n+2 – 2n+1 + 2n = c × 2n, find the value of c.
- (A) 0
- (B) 1
- (C) –1
- (D) 3
9. If 21998 – 21997 – 21996 + 21995 = K × 21995, then the value of K is
- (A) 1
- (B) 2
- (C) 3
- (D) 4
8. 72. Vaue of (1022 + 1020)/1020 is
- (A) 10
- (B) 1042
- (C) 101
- (D) 1022
7. Value of (x12 + x10)/x10 is
- (A) x + 1
- (B) x2 + 1
- (C) x2
- (D) x12
6. Which of the following has the largest value?
- (A) 0.0001
- (B) 102/106
- (C) 1/106
- (D) (1/106) ÷ 0.1
5. Which of the following has the smallest value?
- (A) 0.001
- (B) 10/104
- (C) 1/105
- (D) (1/105) ÷ 0.1
4. Which among the following terms is largest?
- (A) (33)2
- (B) 35
- (C) 240
- (D) 23 × 33
3. Which among the following terms is smallest?
- (A) 22 × (22)3
- (B) 38 ÷ 33
- (C) 25+3
- (D) 25 × 32
2. By what number should we multiply 33 so that the product may be equal to 37?
- (A) 71
- (B) 81
- (C) 91
- (D) 82
1. By what number should (–4)5 be divided so that the quotient may be equal to (– 4)3?
- (A) (–4)2
- (B) (–4)5
- (C) (–4)3
- (D) (–4)0