Divide the LCM of 15abc and 20a\(^2\)bc by their HCF
10a
12a
5abc
12a2bc
60a2bc
Correct answer is B
LCM of 15abc and 20a\(^2\)bc = 60a\(^2\)bc
Factors of 15abc = 1, 3, 5,15, a, b, c
and of 20a\(^2\)bc = 1, 2, 4, 5, 10, 20, a, b, c
HCF of 15abc and 20a\(^2\)bc = 5abc
→ LCM ÷ HCF = 60a\(^2\)bc ÷ 5abc
= 12a
Simplify \((216{\frac{1}{3}})^{-2}\)
\(\frac{1}{36}\)
\(\frac{1}{18}\)
\(\frac{1}{13}\)
\(\frac{1}{6}\)
\(\frac{1}{3}\)
Correct answer is A
\((216^{\frac{1}{3}})^{-2}\)
= \(216^{\frac{-2}{3}}\)
= (3√216)\(^{-2}\)
= (6)\(^{-2}\)
= \(\frac{1}{6^2}\)
=\(\frac{1}{36}\)
The expression 4x2 - 4 has the following as its factors EXCEPT
x - 1
x + 1
x2 -1
4x + 1
4x - 4
Correct answer is D
No explanation has been provided for this answer.
Calculate (0.05 × 0.025) ÷ (4.25 × 3.35) and express your answer in standard form
8.7796 × 105
8.7796 × 104
8.7796 × 103
8.7796 × 10-3
8.7796 × 10-5
Correct answer is E
No explanation has been provided for this answer.
The angle subtended by a diameter of a circle at the circumference is a/an
acute angle
obtuse angle
reflex angle
right angle
supplementary angle
Correct answer is D
No explanation has been provided for this answer.