IIT JEE Practice Question and Answer
8Q: The probability that a bowler bowled a ball from a point will hit by the batsman is ¼. Three such balls are bowled simultaneously towards the batsman from that very point. What is the probability that the batsman will hit the ball ? 2057 05b5cc6c6e4d2b4197774de31
5b5cc6c6e4d2b4197774de31- 137/64true
- 227/56false
- 311/13false
- 49/8false
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Answer : 1. "37/64"
Explanation :
Answer: A) 37/64 Explanation: Probability of not hitting the ball = 1- 1/4 =Then, the probability that the batsman will hit the ball =
Q: Find the next number in the given number series? 35, 36, 55, 111, ? 2053 05b5cc62ae4d2b4197774b8a5
5b5cc62ae4d2b4197774b8a5- 1278.5true
- 2264.5false
- 3212.5false
- 4202false
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Answer : 1. "278.5"
Explanation :
Answer: A) 278.5 Explanation: The given number series is 35, 36, 55, 111, ? 35 35 x 1 + 1 = 36 36 x 1.5 + 1 = 55 55 x 2 + 1 = 111 111 x 2.5 + 1 = 278.5 Hence, the next number in the given number series is 278.5.
Q: Showing a man a woman said, "His brother's father is the only son of my grandfather". How is the woman related to the man? 2053 05b5cc6bee4d2b4197774d96a
5b5cc6bee4d2b4197774d96a- 1Sistertrue
- 2Auntfalse
- 3Sister-in-lawfalse
- 4Daughter-in-lawfalse
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Answer : 1. "Sister"
Explanation :
Answer: A) Sister Explanation: The man's brother's father means his father is the only son of woman's grandfather => grandfather to the man also => Woman and the man are brother and sisters.
Q: If 'A $ B' means 'A is brother of B', 'A @ B' means 'A is wife of B', 'A #B' means ' A is daughter of B' and 'A * B' means 'A is father of B', then which of the following expressions indicates the relationship 'U is father-in-law of P ? 2052 05b5cc715e4d2b4197774f468
5b5cc715e4d2b4197774f468- 1P@Q$T#U*Wtrue
- 2P@Q$T#W*Ufalse
- 3P@W$Q*T#Ufalse
- 4P@Q$W*T#Ufalse
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Answer : 1. "P@Q$T#U*W"
Explanation :
Answer: A) P@Q$T#U*W Explanation: Here the P is the wife of Q who is brother of T who is daughter of U. That implies P is wife of U's son Q => U is father-in-law of P.
Q: In MS-Word, for what does ruler help? 2051 15b5cc69ce4d2b4197774c846
5b5cc69ce4d2b4197774c846- 1to set indentsfalse
- 2to change page marginsfalse
- 3to set tabsfalse
- 4All the abovetrue
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Answer : 4. "All the above"
Explanation :
Answer: D) All the above Explanation: In MS-Word, the Ruler function helps align the text, graphic, tables or other elements in your document.
Q: A man traveled from the village to the post-office at the rate of 25 kmph and walked back at the rate of 4 kmph. If the whole journey took 5 hours 48 minutes, find the distance of the post-office from the village ? 2051 05b5cc74ae4d2b4197774facc
5b5cc74ae4d2b4197774facc- 140 kmfalse
- 230 kmfalse
- 320 kmtrue
- 410 kmfalse
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Answer : 3. "20 km"
Explanation :
Answer: C) 20 km Explanation: Average speed = 2aba+b, here a=25 b=4 = 2 x 25 x 4/(25+4) = 200/29 km/hr. Distance covered in 5 hours 48 minutes = Speed x time = (200/29)x (29/5) Distance covered in 5 hours 48 minutes = 40kms. Distance of the post office from the village = (40/2) = 20 km.
Q: What is two weeks from today? 2051 05b5cc6a6e4d2b4197774cd47
5b5cc6a6e4d2b4197774cd47- 1same daytrue
- 2previous dayfalse
- 3next dayfalse
- 4Nonefalse
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Answer : 1. "same day"
Explanation :
Answer: A) same day Explanation: We know that the day repeats every 7 days, 14 days, 21 days,... So if today is Monday, after 7 days it is again Monday, after 14 days again it is Monday. Hence, after 2 weeks i.e, 14 days the day repeats and is the same day.
Q: A sum of money becomes 7/6 of itself in 3 years at a certain rate of simple interest. The rate per annum is ? 2050 05b5cc6dfe4d2b4197774eacb
5b5cc6dfe4d2b4197774eacb- 145/7 %false
- 250/9 %true
- 351/7 %false
- 447/ 9 %false
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Answer : 2. "50/9 %"
Explanation :
Answer: B) 50/9 % Explanation: Let sum = S. Then, amount = 7S/6 S.I. = 7S/6 - S = S/6; Time = 3 years. Rate = (100 x S) / (S x 6 x 3) = 5 5/9 = 50/9 %.