Question
The sum of the five consecutive even numbers is 2720.
The sum of the third and fifth numbers is:Solution
Given: Five consecutive even number sum= 2720 The sum of an even number let the five number be x-4, x-2, x, x+2, x+4. Now, x-4+ x-2+ x+ x+2+ x+4= 2720 5x = 2720 Â x = 544 then, sum of third and fifth number, x + x+4 = 544+548 = 1092 Alternate Method: Â As per the question. Sum of five consecutive even number is 2720. So, the average is 2720/5=544 the middle number of the five consecutive even number which is third even number, so fifth even number is 544+4 = 548 Sum of 544+548 = 1092
(22 × 52 ) + 4 × 6 = ? - √324
What should come in place of (?) question mark in the given expression.
 (25% of 320) + (3/8 of 400) − 30 = ?
(5832)1/3  × 10.11 × 11.97 ÷ 16.32 = ? + 45.022
82% of 400 + √(?) = 130% of 600 - 85% of 400
If (x + 1/x) = 5, then value of x3 + 1/x3 is:
Simplify: (1 ÷ 0.08)
What should come in place of (?) question mark in the given expression.
{ (144 ÷ 12) × 5 } − (18 ÷ 3) = ?
Simplify the following expressions and choose the correct option.
(3/4 of 256) + (2/5 of 150) - (72 ÷ 7)
464 + 181 +? = (154 × 25) - (15) 2 Â
15% of 1800 + 22 = ?Â
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