(3² x 4² x 5) ÷ 36 = (?)² - 80
A). 10
B). 12
C). 14
D). 16
10
(?)² = 3² x 4² x 5/36 + 80
= 20 + 80 = 100
∴ ? = √100 = 10
2. What is the value of \(\frac{{\sqrt {128} \; + \;\sqrt {72} }}{{\sqrt {32} }}\)
3. 35%of ?=242
4. Two numbers are in the ratio 3 : 4. If their LCM is 240, the smaller of the two number is
6. The simplest form of 1.5 : 2.5 is :