If the product of two positive numbers is 1575 and their ratio is 7 : 9, then the greater number is
45
35
135
135
What is the smallest number by which 625 must be divided so that the quotient is a perfect cube?
25
5
2
2
When 335 is added to 5A7, the result is 8B2. 8B2 is divisible by 3. What is the largest possible value of A?
8
2
1
1
The sum of the squares of two natural consecutive odd numbers is 394. The sum of the numbers is
24
32
40
40
D.
40
Let x and x+2 be the two consecutive odd numbers.
So, the numbers are (x = 13), (x+2 = 13+2 = 15)
∴ The required sum = 13 + 15 = 28
Shortcut Method:
By mental operation,
132 + 152 = 169 + 225 = 394
∴ The required sum = 13 + 15 = 28