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The plant cells absorb nitrates from the soil and convert them into ammonia which ultimately reduced to ammonium ions (NH4+). These ammonium ions are then combined with organic compounds to form amino acids such as glutamine i.e., free nitrogen. This process of conversion is known as nitrogen fixation.
Find the last digit of (12123 – 1).
What must be added to (7/20) to make it (3/4)?
Find the number of zeros at the end of 78!.
Find the sum of all two-digit numbers that are exactly divisible by 6.
The ratio between two numbers is 2:3 and the sum of their squares is 2197. The numbers are:
Sum of seven consecutive natural numbers is always divisible by which of the following number?
Two numbers add up to 18, and the sum of their reciprocals is 5/2. Calculate the square of the product of the two numbers.
