The value of the mole is equal to the number of atoms in exactly 12 grams of pure carbon-12. 12.00 g C-12 = 1 mol C-12 atoms = 6.022 × 1023 atoms. The number of particles in 1 mole is called Avogadro's Number.
When a number is divided by 17, the remainder remains 6. Find the remainder obtained when the square of the same number is divided by 17.
The largest three-digit number which gives the same remainder 3 when divided by 4, 9, 6 is:
Find the third proportion of 32 and 16.
Arvind's age after 19 years will be 67 years. Ravi is 4 years older than Arvind. The ratio of present ages of Samar and Ravi is 9:13. Find the age of Sa...
Find the number which is nearest to 457 and is exactly divisible by 11.
The numerator of a fraction is 2 less than its denominator. If the numerator is decreased by 2 and the denominator is increased by 3, the denominator be...
Which number must be multiplied with 2352 to transform it into a perfect square?
The sum of eight consecutive even numbers of set-A is 416. What is the sum of five consecutive numbers of another set whose lowest number is 18 more tha...
How many integers are there between 50 and 600 that are divisible by both 15 and 25?
What is the average of all the prime numbers which are less than 35?
