Business Mathematics
301. Solve log √8/log 8 is the same as
- 1/√8
- 1/8
- ¼
- ½
Correct answer: (D)
½
302. Evaluate Log 243 / Log 9
- 3/2
- 5/2
- 7/2
- 9/2
Correct answer: (B)
5/2
303. The conjugate of a complex number z = (a + ib) is
- – a – ib
- b – ai
- b + ai
- a – ib
Correct answer: (D)
a – ib
304. (-3/5) x (-10/9) x (21/-4) x (-6)
- 21
- 42
- 35
- 15
Correct answer: (A)
21
305. The additive inverse of (-11 / -14) is
- 11 / 14
- – 14 / 11
- 14 / 11
- – 11 / 14
Correct answer: (D)
– 11 / 14
306. Thickness of a pile of 12 cardboards is 35 mm. Hence the thickness of a pile of 294 cardboards is
- 80.50 cm
- 83.75 cm
- 85.75 cms
- 81.50 cms
Correct answer: (C)
85.75 cms
307. The set of irrational numbers is
- Finite
- Countable
- Uncountable
- Infinite
Correct answer: (C)
Uncountable
308. The product of r consecutive positive integers is divisible by
- r!
- (r – 1)!
- ( r + 1)!
- None of these
Correct answer: (A)
r!
309. If 20Cr = 20Cr-10-10, then 18Cr is equal to
- 4896
- 816
- 1632
- None of these
Correct answer: (B)
816
310. Among 14 players, 5 are bowlers. In how many ways a team of 11 may be formed with at least 4 bowlers?
- 265
- 263
- 264
- 275
Correct answer: (C)
264