Question
The average of 7 consecutive odd numbers is 39. What is
the smallest of these numbers?Solution
For consecutive odd numbers, the middle (4th) number = average. So 4th number = 39. Sequence: 1st, 2nd, 3rd, (4th) 39, 5th, 6th, 7th Difference between consecutive odd numbers is 2. So: 3rd = 39 − 2 = 37 2nd = 35 1st = 33 But we went backward incorrectly—let’s correct: 4th = 39 3rd = 39 − 2 = 37 2nd = 35 1st = 33 So smallest = 33 (Option C). Double-check calculation: yes.
Determine the simplified value of the given mathematical expression.
(150% of 950) ÷ ? = 25
Evaluate:
√729 + √49 - √16 + 1/√64
What will come in the place of question mark (?) in the given expression?
? = (20 × 62 – 342 )
1299.999 ÷ 325.018 × 24.996 = ?
Simplify: 0.6 ÷ 0.04 + 0.125 × 0.8
Simplify the following expression and find the final value:
(18 ÷ 6 of 2 + 7 of 5) ÷ 5
What will come in the place of question mark (?) in the given expression?
28 X 3.5 + 12 X 6 = ? X 4 + 90
- If (6 × 225 – 432 ÷ 18) ÷ 24 = √2025 – x, what is the value of ‘x’?
1428 ÷ 17 = ? % of 120
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