Question
What is the average of the first eight triangular
numbers?Solution
ATQ,
Triangular numbers are the numbers obtained by continued summation of natural numbers.
First eight triangular numbers = 1, 3, 6, 10, 15, 21, 28, 36
Required average = (1 + 3 + 6 + 10 + 15 + 21 + 28 + 36) ÷ 8
More Reasoning Miscellaneous Questions
What will come in the place of question mark (?) in the given expression?
? = 90% of 25% of (40 × 200) + 300
1500 ÷ 15 + 1000 ÷ √100 + ? = 250 * 3
Simplify the expression:
(4x² - 16) / (2x - 4)
- What will come in place of (?) in the given expression.
56% of 250 + 32% of 150 = ? (22² × 8²) ÷ (92.4 ÷ 4.2) =? × 32
40% of 220 × 15 ÷ 20 = ?
[(40)2 ÷ 32 × 4] ÷ 50 = ?
Simplify: 3√50 − 2√8 + √18
25% of 1600 – 152 = ? × 5
What will come in place of (?) question mark in the following expression.
5(1/4) + 3(1/2) - 2(1/8) = ?
