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 –, ×, +, ÷.
Find the smallest number greater than 300 which leaves a remainder 1 when divided by 4, 5 and 6.
Sum of digits of a two-digit number is 9. When 27 is subtracted from the number, its digits get interchanged. Find the original number.
Find the range of the given data:
14, 28, 35, 21, 42, 56, 49
A and B are positive integers. If A + B + AB = 65, then what is the difference between A and B (A, B ≤ 15)?
How many 4-digit numbers greater than 3000 can be formed using the digits 1, 2, 3, 4, 5 without repetition?
The sum of two distinct positive natural numbers is 246, and their difference is 34. Calculate 10% of the product of these two numbers.
Three numbers are in the ratio 6:9:13. The difference of the sums (first + third) and (first + second) is 52. Find the largest number.
The value of a machine depreciates every year by 12%. What will be its value after 2 year if its value is Rs 19,650?
- Find the interval of x where the expression 21x - 3x² - 54 is greater than zero.
- If 246x179y is divisible by 72, find the value of (x + 2y).
