Question
What is the unit digit of the sum of first 111 whole
numbers?Solution
Sum of first 11 whole numbers is 0+1+2...110 i.e n(n+1)/2 =110*111/2 =55*111 Therefore unit digit is 5
142 + 233 + ?2 – 301 = 450 + 65
What will come in the place of question mark (?) in the given expression?
(16 × 22 + 23) ÷ 15 + 24 = ?2 – 16 × 2
9 × 4 ? ÷ 16 = 144
√(2670+ √(1141+ √(260- √(1251- √(637+ √1521) ) ) ) ) =?
‘A’ and ‘B’ invested Rs. 5000 and Rs. 4200, respectively in a business, together. After 7 months, ‘A’ withdrew 25% of his initial investment...
2*1/3 + 22*1/3 + 222*1/3 + 2222*1/2 + 22222*1/2 = ?
√256 * 3 – 15% of 300 + ? = 150% of 160
Simplify the expression and find the value of 'x'
35% of 500 of 18 ÷ 21 = x
What will come in the place of question mark (?) in the given expression?
? X (62 - 20) + 60 X 5 = √1296 X 25 - 35 X 43...
416 ÷ 8 + 132 – 25% of 420 = ?
