WorksheetsReal numbers quiz
Total questions: 17
Worksheet time: 10mins
Q1. Express 98 as a product of its primes.
2²×7
2³×7²
2×7²
2×6²
Q2 .Find the prime factorisation of the denominator of rational number expressed as 6.12bar
In simplest form
Prime factorization -33, 3×11
Prime factorization-36 ,4×9
Prime factorization-35 ,7×5
Prime factorization-32, 4×8
The product of a non-zero number and an irrational number is:
Irrational
Always irrational
Always rational
Rational
If two positive integers p and q can be expressed as p =ab² and q=a³b, where a,b being prime numbers , then LCM (p,q) I'd equal to
ab
a²b²
a³b²
a³b³
The decimal expansion of rational no 14587/1250 will terminate after
one decimal place
two decimal place
three decimal place
Four decimal place
Five decimal place
n² -1 is divisible by 8 ,if n is
an odd integer
an integer
a natural no.
an even no.
If the HCF of 65 and 117 is expressible in the form 65m-117 , then the value of m is
2
3
5
1
Can two numbers have 18 as their HCF and 380 as their LCM ?
No
yes
The least number that is divisible by all the numbers from 1 to 10 (both inclusive ).
10
100
504
2520
The product of three consecutive positive integers is divisible by 6 . is this statement true or false
True
False
For some integer q, every odd integer is in the form of (a)
What is the least number that must be added to 1056 so the number is divisible by 23?
3
2
0
1
a and b, when divided by 7 and 6 respectively, leave remainders p and q respectively. What is the maximum value of p + q?
6
1
11
13
‘s’ is called irrational if it cannot be written in the form of _____ where p and q are integers and ______
p/q, p = 0
p/q, p ≠ 0
p/q, q ≠ 0
p/q, q = 0
Write down the decimal expansions of : 13/ 6250
0.00416
0.0208
0.00512
0.00208
Find the HCF of 1848, 3058 and 1331.
9
14
11
13
If two positive integers a and b , let a be (Doraemon) and b be (Nobita) and a= x³ +y² and b= xy³ , where x and y are prime numbers , then HCF of (a,b) is .....
xy
xy²
x³y³
x²y²
