CAT प्रश्न और उत्तर का अभ्यास करें
8प्र: The minimum number of half years in which a sum of money kept at 60% compound interest will be quadrupled is ? 3010 05b5cc77fe4d2b4197775016f
5b5cc77fe4d2b4197775016f- 12false
- 24false
- 33false
- 46true
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उत्तर : 4. "6"
व्याख्या :
Answer: D) 6 Explanation: Let us assume Amount be 100 Rs and we calculate in CI First year 60% of 100 = 60 amount (100+60) is 160 Second year 60% of 160 = 96 amount (160+96) is 256 Third year 60% of 256 =153.6 amount (256+153.6) is 409.6 Here the Amount of 100 Rs is quadrapled in 3 years. One year contains 2 half years Three year has 6 half years. Therefore, It takes 6 half years.
प्र: 9 tens 10 ones equals 3009 05b5cc626e4d2b4197774b83c
5b5cc626e4d2b4197774b83c- 1910false
- 290false
- 391false
- 4100true
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उत्तर : 4. "100"
व्याख्या :
Answer: D) 100 Explanation: 9 tens 10 ones equals => 9 x 10 + 10 x 1 => 90 + 10 => 100.
प्र: When Raj Tarun was born, his father was 32 years older than his brother and his mother was 25 years older than his sister. If Raj Tarun's brother is 6 years older than Raj Tarun and his mother is 3 years younger than his father, how old was Raj Tarun's sister when Raj Tarun was born ? 3007 05b5cc74ae4d2b4197774fa6d
5b5cc74ae4d2b4197774fa6d- 15false
- 210true
- 315false
- 48false
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उत्तर : 2. "10"
व्याख्या :
Answer: B) 10 Explanation: Raj Tarun's age = 0 when he was born.Then, given his brother is 6 years old.Then his father is 6 + 32 = 38 when Raj Tarun was bornAnd his mother is 3 years yonger than his father => so his mother was 35 years old when Raj Tarun was bornand his sister is 25 year younger than his mother so Raj Tarun's sister was 10 years old when Raj Tarun was born.
प्र: Two persons Shyam and Rahim can do a job in 32 days together. Rahim can do the same job in 48 days alone. They started working together and after working 8 days Rahim is replaced by a third person Ram whose efficiency is half that of Rahim. Find in how many days the remaining work will be completed by both Shyam and Ram together? 3006 05b5cc6a3e4d2b4197774cc20
5b5cc6a3e4d2b4197774cc20- 116 daysfalse
- 272/5 daystrue
- 315 daysfalse
- 496/5 daysfalse
- उत्तर देखेंउत्तर छिपाएं
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उत्तर : 2. "72/5 days"
व्याख्या :
Answer: B) 72/5 days Explanation: Work done by Shyam and Rahim in 8 days = 8/32 = 1/4 Remaining work to be done by Shyam and Ram = 1 - 1/4 = 3/4 Given efficieny of Ram is half of Rahim i.e, as Rahim can do the work in 48 days, Ram can do the work in 24 days. One day work of Ram and Shyam = (1/32 - 1/48) + 1/24 = 5/96 Hence, the total work can be done by Shyam and Ram together in 96/5 days. Therefore, remaining work 3/4 can be done by them in 3/4 x 96/5 = 72/5 = 14.4 days.
प्र: If Riya's age is four times the age of Siya and if Riya's age is 24 yrs , find the age difference between Riya and Siya ? 3006 05b5cc6dce4d2b4197774e98d
5b5cc6dce4d2b4197774e98d- 12 yrsfalse
- 212 yrsfalse
- 318 yrstrue
- 46 yrsfalse
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उत्तर : 3. "18 yrs"
व्याख्या :
Answer: C) 18 yrs Explanation: Let Siya's age = x Then Riya's age = 4x But given Riya's age = 24 => 4x = 24 => x = 6 Hence Siya's age = 6 yrs => The age difference = 24 - 6 = 18 yrs.
प्र: Which one of the following is a landlocked harbour ? 3005 05b5cc6d5e4d2b4197774e5de
5b5cc6d5e4d2b4197774e5de- 1Mumbaifalse
- 2Haldiafalse
- 3Vishakapatnamtrue
- 4Ennorefalse
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उत्तर : 3. "Vishakapatnam"
व्याख्या :
Answer: C) Vishakapatnam Explanation:
प्र: निम्नलिखित में से कौन एक आउटपुट डिवाइस नहीं है? 3004 05b5cc6abe4d2b4197774cffc
5b5cc6abe4d2b4197774cffc- 1स्कैनरtrue
- 2मॉनिटरfalse
- 3प्रिंटरfalse
- 4स्पीकरfalse
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उत्तर : 1. "स्कैनर "
व्याख्या :
Answer: A) Scanner Explanation:
प्र: How much does a clock lose per day, if its hands coincide ever 65 minutes ? 3003 05b5cc6f8e4d2b4197774f077
5b5cc6f8e4d2b4197774f077- 11440/143 minfalse
- 2184/13 minfalse
- 31425/18 mintrue
- 4541/9 minfalse
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उत्तर : 3. "1425/18 min"
व्याख्या :
Answer: C) 1425/18 min Explanation: 55 min. spaces are covered in 60 min.60 min. spaces are covered in ((60/55) x 60) min = 720/11 min.Loss in 65 min. = (720/11 - 65 ) = 5/11Loss in 24 hrs = (5/11 x 1/65 x 24 x 60)min = 1440/143 min.

