# The average number of 7 numbers is added to it. The average of the number 3 is 21. What is the average of 10 numbers in the constellation?
7 * 40 = 280 again 3 * 21 = 63, then the sum of 10 numbers is 280 + 63 = 343, the sum of 10 numbers is 343 ÷ 10 = 34.4
# To increase the sugar prices by 25%, a family consumes sugar in such a
way that the cost of sugar is not increased. How much is the amount of
sugar consumed by the family?
(Increase * 100) / increased value = (25 * 100) / 125 = 20%
# What is the next number of 2,3,5,9,17?
3-1 = 2, 3+ (1 * 2) = 5, 5+ (2 * 2) = 9__a 17+ (8 * 2) = 33
# {-10- (- 7)} Waiting for {-10 + (- 7)} how big or small
A) -17 b) -20 c) -19 d) None is there
Waiting for {-10- (- 7}} {-10 + (- 7)}
{-10 + 7} {-10 -7}
-3-17
# The product of two numbers is 189 and the sum of two is 30. Number two?
A) 9 and 21 b) 7 and 23 c) 8 and 22 d) 12 and 18
21 + 9 = 30, 21 * 9 = 189 Answer = a) 9 and 21
A chair is sold at 180 rupees and 20% gain on the purchase price. How much is the purchase price of the chair?
Purchase value = T * (100 / increase value) = 180 (100/20) = 150
# Ahsan's salary increased by 5% and his salary increased by 6000 rupees. How much was Ahsan salary?
A) 120,000 (120000 * 5/100 = 6000 taka)
B) 12000 taka c) 130000 taka d) None
# How long will the length of the longest part be divided in a ratio of 3: 7: 10 to a 40 meter long rope?
3 + 7 + 10 = 20, the longest part = 40's 10/20 = 20 meters
# If there are a3-b3 = 513 and a-b = 3, then what is the same?
A) 48 b) 54 c) 60 d) 45
# If the 4 year interest rate is Rs. 425, how much will be the interest rate annually?
Annual interest rate = (100 * interest) / (time * original) or, (100 * 85) / (4 years * 425) = 5%
