a) 6-1 b) 1 c)6-12 d)6-11
Q3. The L.C.M of the fraction of 2/3,4/9,5/6,7/12 is:
Q4. The ratio of two number is 5:6, if their H,C.F. is 9 and L.C.M. is 270. Find the numbers.
a) 72,63 b) 81,108 c) 45,54 d) 225,108
Q5. The multiplication of two numbers is 20,000 if their L.C.M is 800. Find the H.C.F.
a)400 b) 25 c) 2,000 d) 800
Q6. Find the least number which when divided by 4,6,7,8,9,12. leaves the same remainder 3 in each case.
a) 504 b) 501 c) 507 d) 506
Q7. The smallest number which is divisible by 12,15,20 and is a perfect square is:
a) 400 b) 900 c) 1600 d) 3600
Q8. The largest number which divided by 77, 147 and 252 to leave the same remainder in each case is:
a) 9 b) 15 c)35 d) 25
Q9. The H.C.F. of the fraction of 36/25,48/25,72/75
a)12/75 b) 4/25 c) 36/25 d) 36
Solution:
(1)Sol: Option (d)
L.C.M. = 1210
(2)
Sol: Option(c)
= 16-12
(3)
Sol: Option (d)
(4)
Sol: Option (c)
The ratio of numbers is 5:6
The number is 5✘9=45
=6✘9=54
(5)
Sol: Option (b)
L.C.M.✘H.C.F. = Ist No✘2nd No.
800✘H.C.F. = 20,000
H.C.F. = 20,000/800 = 25
(6)
Sol: Option (c)
L.C.M. of the number 4,6,7,8,9,12
L.C.M. = 8✘9✘7 = 504
and Remainder = 3
So the number is L.C.M. + 3
504 + 3 = 507
(7)
Sol: Option (b)
L.C.M. = (3✘5✘22)
Required number = ( 32✘52✘22)=900
(8)
Sol: Option (d)
Required number = H.C.F. of (147-77)
(252-147) and (252-77)
= H.C.F. of 70,105 and 175
= 35
( 70 = 2✘5✘7, 105 = 5✘3✘7 and 175=5✘5✘7 )
H.C.F. of ( 26✘3✘7),(26✘29),(26✘43)
=26 = 64
(9)
Sol: Option (a)
= H.C.F. of numerator/ L.C.M. of denominator
H.C.F.= 12/75
This entry passed through the Full-Text RSS service - if this is your content and you're reading it on someone else's site, please read the FAQ at http://ift.tt/jcXqJW.
No comments:
Post a Comment