Quantitative Aptitude Practice Question and Answer
8Q: Using numbers from 0 to 9 the number of 5 digit telephone numbers that can be formed is 1834 05b5cc7b4e4d2b4197775088d
5b5cc7b4e4d2b4197775088d- 11,00,000false
- 259,049false
- 33439true
- 46561false
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Answer : 3. "3439"
Explanation :
Answer: C) 3439 Explanation: The numbers 0,1,2,3,4,5,6,7,8,9 are 10 in number while preparing telephone numbers any number can be used any number of times. This can be done in 105ways, but '0' is there So, the numbers starting with '0' are to be excluded is 94 numbers. Total 5 digit telephone numbers = 105- 94 = 3439
Q: How many seconds will a 800 meter long train moving with a speed of 63 km/hr take to cross a man walking with a speed of 3 km/hr in the direction of the train ? 1832 05b5cc6dde4d2b4197774ea0f
5b5cc6dde4d2b4197774ea0f- 148true
- 252false
- 338false
- 442false
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Answer : 1. "48"
Explanation :
Answer: A) 48 Explanation: Here distance d = 800 mts speed s = 63 - 3 = 60 kmph = 60 x 5/18 m/s time t = 800x1860x5= 48 sec.
Q: 12 as a percentage? 1828 05b5cc696e4d2b4197774c570
5b5cc696e4d2b4197774c570- 150%true
- 25%false
- 30.5%false
- 40.05%false
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Answer : 1. "50%"
Explanation :
Answer: A) 50% Explanation: 1/2 as a percentage means 1/2 = 0.5 in decimal Now, in percentage means 0.5 x 100% = 50%.
Q: In how many different ways can the letters of the word 'ABYSMAL' be arranged ? 1827 05b5cc6c9e4d2b4197774df88
5b5cc6c9e4d2b4197774df88- 15040false
- 23650false
- 34150false
- 42520true
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Answer : 4. "2520"
Explanation :
Answer: D) 2520 Explanation: Total number of letters in the word ABYSMAL are 7 Number of ways these 7 letters can be arranged are 7! ways But the letter is repeated and this can be arranged in 2! ways Total number of ways arranging ABYSMAL = 7!/2! = 5040/2 = 2520 ways.
Q: Find the odd letter/word from the given alternatives. 1827 05b5cc6cae4d2b4197774dff2
5b5cc6cae4d2b4197774dff2- 1Horsetrue
- 2Ewefalse
- 3Hindfalse
- 4Bitchfalse
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Answer : 1. "Horse"
Explanation :
Answer: A) Horse Explanation: Except Horse, remaining all belong to female category. Hind - Female Deer Ewe - Female Sheep Bitch - Female Dog.
Q: Find the simple interest on Rs.600 for 11 months at 5 paisa per month ? 1826 05b5cc6e3e4d2b4197774ec93
5b5cc6e3e4d2b4197774ec93- 1Rs. 30false
- 2Rs. 3.30true
- 3Rs. 33false
- 4Rs. 330false
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Answer : 2. "Rs. 3.30"
Explanation :
Answer: B) Rs. 3.30 Explanation: I = (600x11x5)/100 = 330 Paise = Rs. 3.30
Q: The average age of 80 boys in a class is 15. The average age of group of 15 boys in the class is 16 and the average of another 25 boys in the class is 14. What is the average age of the remaining boys in the class ? 1823 05b5cc736e4d2b4197774f883
5b5cc736e4d2b4197774f883- 112.24 yrsfalse
- 213.25 yrsfalse
- 316 yrsfalse
- 415.25 yrstrue
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Answer : 4. "15.25 yrs"
Explanation :
Answer: D) 15.25 yrs Explanation: Total ages of 80 boys = 15 x 80 = 1200 yrs.Total age of 16 boys = 15 x 16 = 240 yrsTotal age of 25 boys = 14 x 25 = 350 yrs.Average age of remaining boys = 1200 - (240+350) / 80 - (25+15) = 610/41 = 15.25 yrs.
Q: A number, when 35 is subtracted from it, reduces to its 80 percent. What is four - fifth of that number ? 1822 05b5cc6dee4d2b4197774ea4b
5b5cc6dee4d2b4197774ea4b- 1175false
- 2140true
- 3135false
- 495false
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Answer : 2. "140"
Explanation :
Answer: B) 140 Explanation: x - 35 = 80x/100 => x = 175 => 4x/5 = 4x175/5 = 140.