- Find the median of the following observations: 
 101, 104, 99, 97, 102, 106, 105
- If the 4-digit number p89q is exactly divisible by 9, what is the least value of (p + q)?
- 32% of 40% of 500 = q + 12, find the sum of squares of the digits in ‘q’.
- If x varies inversely as (y2 – 1) and is equal to 40 when y = 5 then the value of x and y = 7 is 
- If 1.5x = 0.04y, then the value of 
- "PQR is a three-digit number such that it can be expressed as the sum of its three two-digit components, PQ, QR, and RP, where all of them are natural n... 
- Find the last digit of (12123 – 1). 
- Twin prime numbers are the prime numbers whose difference is always equal to 2. The number of twin primes between 35 and 100 is: 
- Determine the smallest 4-digit number that, when divided by 15, 24, and 30, leaves a remainder of 5 each time. 
- The ratio between the sum of the digits of a two-digit number and that two-digit number is 1 : 6. If the digit in the unit's place is three less than th...