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Number System
Whole numbers, integers, divisibility, HCF and LCM.
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Practice this topic
Take a full mock →Q1 · Number System · EASY
What is the sum of the first 10 natural numbers?
Q2 · Number System · HARD
What is the highest common factor (HCF) of 144, 180, and 192?
Q3 · Number System · HARD
How many prime numbers are there between 50 and 70?
Q4 · Number System · MEDIUM
What is the least common multiple (LCM) of 12 and 18?
Q5 · Number System · EASY
Find the HCF of 48, 72, and 120.