Question
If total number of factors of 3,240 is 'x', then find
the value of (x - 3)(x + 5).Solution
Factors of 3,240 = 2³ × 3⁴ × 5
So, total number of factors = (3 + 1)(4 + 1)(1 + 1) = 4 × 5 × 2 = 40
Required value = (x - 3)(x + 5) = (40 - 3)(40 + 5) = 37 × 45 = 1665
1449.98 ÷ 50.48 × 10.12 = ? × 2.16
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
Two trains, 'P' and 'Q', are moving with speeds of 16 m/s and 24 m/s, respectively. The lengths of the trains are in the ratio 3:...
A and B can complete a task together in 30 days, while B alone takes 60 days to finish it. A began working alone and left after ‘x’ days, after whic...
Find the approximate value of Question mark(?). No need to find the exact value.
(34.95 × 7.03) ÷ 5 + 27.98% of 249.88 – √(80.81) = ?
...30.05% of 1279.98 - ? x 4.06 = 8.082
Raju invests Rs. (p + 200) at a simple interest rate of 25% per annum for a period of 6 years and earns a total interest of Rs. (...
20.22% of (74.9 × 6.01) + 69.97 =?
[34.01 × 18.98 – 12 × √576.03 – 198] ÷ 3.95 = ?
