Question
Select the correct sequence of mathematical signs that
can sequentially replace the ‘#’ signs and balance the given equation. 56 # 8 # 4 # 32 # 2 = 40Solution
56 # 8 # 4 # 32 # 2 = 40 56 – 8 × 4 + 32 ÷ 2 = 40 56 – 32 + 16 = 40 24 + 16 = 40 So, the correct sequence of signs is –, ×, +, ÷.
A two-digit number has a sum of its digits equal to 9. Additionally, if 27 is subtracted from this number, the resulting number has its digits reversed....
When a number is increased by 8, it becomes 120% of itself. The number is:
Find the sum of all those 3-digit numbers which when divided by 10 leave a remainder of 5.
- The sum of two numbers is 30 whereas the sum of their reciprocals is (12/5). Find the square of the product of the two numbers.
- Determine the smallest 5-digit number that is divisible by 16, 28, 32 and 40.
If the numerator of a fraction is increased by 20%, and denominator is decreased by 25%, then the fraction becomes 14/9. Find the original fraction.
Find the largest four-digit number which when divided by 7, 13, 14, and 20, leaves a remainder 1, 7, 8, and 14 respectively.
What is the remainder when (x²⁷ + 51) is divided by (x + 1)?
The sum of the digits of a two-digit number is 12. When the digits are interchanged, the number decreases by 18. Find 160% of the number.
A tree increases annually by one - fourth of its height. What will be the height of the tree after 3 years, if it stands today at 64 cm height?
