LCM of the given number 'x' and 'y' where y is a multiple of 'x' is given by
x
y
xy
(2)
The largest number that will divide 398, 436 and 542 leaving remainders 7, 11 and 15 respectively is
17
11
34
45
(1)
Explanation: Algorithm 398 - 7 = 391; 436 - 11 = 425; 542 - 15 = 527
HCF of 391, 425, 527 = 17
There are 312, 260 and 156 students in class X, XI and XII respectively. Buses are to be hired to take these students to a picnic. Find the maximum number of students who can sit in a bus if each bus takes equal number of students
52
56
48
63
(1)
Explanation: HCF of 312, 260, 156 = 52
There is a circular path around a sports field. Priya takes 18 minutes to drive one round of the field. Harish takes 12 minutes. Suppose they both start at the same point and at the same time and go in the same direction. After how many minutes will they meet?
36 minutes
18 minutes
6 minutes
They will not meet
(1)
Explanation: LCM of 18 and 12 = 36
Express 98 as a product of its primes
(3)
Three farmers have 490 kg, 588 kg and 882 kg of wheat respectively. Find the maximum capacity of a bag so that the wheat can be packed in exact number of bags.
98 kg
290 kg
200 kg
350 kg
98 kg
Explanation: HCF of 490, 588, 882 = 98 kg
is divisible by 8, if m is
An even integer
An odd integer
A natural number
A whole number
(2)
The product of a non-zero rational and an irrational number is
Always rational
Rational or Irrational
Alaways irrational
Zero
(3)
The largest number that which divides 60 and 75, leaving remainders 8 and 10 respectively, is
260
75
65
13
(4)
Explanation: Subtract the remainder 8 and 10 from 60 and 75.
The last number that is divisible by all the numbers from 1 to 5 (both inclusive) is
5
60
20
100
(2)
Explanation: LCM of 1, 2, 3, 4, 5 = 60
