Ques:- X can do a piece of work in 10 days and Y can do it in 15 days and Z can do it 20 days. They started the work together and X leaves after 2 days and Y leaves after 4 days from the beginning. How long will work lost?
Ques:- Find the smallest number which should be multiplied with 520 to make it a perfect square.
Recent Answer : Added by Bipul On 2022-03-09 16:42:16:
130
520 = 26 * 20 = 2 * 13 * 22 * 5 = 23 * 13 * 5
Required smallest number = 2 * 13 * 5 = 130
130 is the smallest number which should be multiplied with 520 to make it a perfect square.
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Ques:- If a passenger train takes twice to cross a freight train to overtake than to cross each other in opposite direction find how many times faster is passenger train than the freight train
Recent Answer : Added by Admin On 2020-05-17 12:01:07:
TWICE
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Ques:- If the HCF of two numbers is 2 and their LCM is 70, then the numbers are
A. 2, 35
B. 4, 70
C. 6, 70
D. 14, 10
Recent Answer : Added by Cynthia Birungi Muhumuza On 2022-08-14 16:34:42:
d
HCF= 2
LCM = 2*5*7 = 70
Ques:- A husband and wife has a combined age of 91.the husband is now twice as old as his wife was when he was as old as she is now. How old are they?
Recent Answer : Added by Admin On 2020-05-17 12:04:21:
ans is C.
let H be present age of husaband.W be present age of wife.
H+W=91.
now let diff between their ages be x.that is H-W=x.
now when husband is W yaers old, his wife must be W-x years
old.and it is given that H=2(W-x). so 2W-H=2x. and H-
W=x.eliminating x we get 4W=3H. but H+W=91, so solving thse
two H=52 W=39.
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Ques:- How many mashes are there in 1 squrare meter of wire gauge if each meshis 8mm long and 5mm wide ?(a) 2500(b) 25000(c) 250(d) 250000
Recent Answer : Added by Nathan Abebe On 2022-04-02 06:59:54:
B, 8mm x 5 mm = 40 mm^2
1000mm x 1000mm = 1,000,000mm^2
= 1,000,000 mm^2/40mm^2
= 25,000
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Ques:- An equilateral triangle of sides 3 inch each is given. How many equilateral triangles of side 1 inch can be formed from it?
Ques:- A company requires 11,500 strength.present employees are 200 women , men and 6500 unmarried To reach the target how many women required to maintain the same ratio?
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Ques:- Find the four digit number in which the first digit is 1/3 of the second, the third is the sum of the first and second, and the last is three times the second.
Recent Answer : Added by Pankhudi Agarwal On 2020-10-02 05:47:29:
let the 4 digit number be ABCD.
First Digit is A :
Therefore; according to the question
A=B/3
B=3A
C=A+B=A+3A=4A
D=3B=3(3A)=9A
Since the last Digit is D and it can neither be double-digit nor 0 ;
Therefore ;
A=1;
B=3A=3(1)=3
C=A+B=1+3=4
D=9A=9(1)=9
Therefore, the 4 digit number is 1349.
Ques:- Find the odd man out:
385, 462, 572, 396, 427, 671, 264
A. 671
B. 427
C. 385
D. 264
Recent Answer : Added by Manthan Shukla On 2022-03-11 17:00:08:
427 is the answer
Because
385 means (3+5=8) or (8-3=5) ,
462 means (4+2=6) or (6-2=4) ,
572 means (5+2=7) or (7-5=2) ,
396 means (6+3=9) or (9-3=6) ,
671 means (6+1=7) or (7-6=1) ,
264 means (4+2=6) or (6-2=4) ,
but only 427 is the number in which if we do addition of any of its two digits (e.g 4+2 or 4+7) then its answer doesn’t come 3rd digit
like if we do 4+2 then answer will be 6 so the number should be 426 but it is not
or if we do 7-4 then answer will be 3 (not 2)
so the right answer is 427
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Ques:- The C.P of 10 pens is equal to the S.P of 12 pens. Find his gain % or loss%?
Recent Answer : Added by abhishek On 2021-11-09 15:53:44:
1.7% loss
Ques:- The average runs scored by a batsman in 20 matches is 40. In the next 10 matches the batsman scored an average of 13 runs. Find his average in all the 30 matches?
Recent Answer : Added by Sonali On 2020-11-17 15:27:47:
31
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Ques:- Personal Information
Ques:- If a sum of money compound annually amounts of thrice itself in 3 years. In how many years will it become 9 times itself.
A. 6
B. 8
C. 10
D. 12
E. 14
Recent Answer : Added by Mariam Mubarak On 2022-01-16 17:19:10:
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130
520 = 26 * 20 = 2 * 13 * 22 * 5 = 23 * 13 * 5
Required smallest number = 2 * 13 * 5 = 130
130 is the smallest number which should be multiplied with 520 to make it a perfect square.