Practice30Create account

Mohan writes all prime numbers from 1 to 30 and adds them up.
What total does he get?

Class 6Prime and Composite NumbersPlaying with Numbers
  • A144
  • B129
  • C258
  • D114

Step-by-Step Solution

Primes 1 to 30: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29. Sum = 2+3+5+7+11+13+17+19+23+29 = 129.
Answer: B) 129

Master this chapter in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Prime and Composite Numbers practice questions

More Class 6 Prime and Composite Numbers practice

Reena thinks of a two-digit number. When she reverses its digits she gets another…A magician in Delhi says: 'Take any prime number greater than 3. When you divide it by…Megha is using the Sieve of Eratosthenes on the numbers 1 to 50. She has finished the…Kabir circled all the prime numbers from 51 to 90 in the grid. Exactly one of his…Arjun uses all 12 counters to make rectangles (3 rows of 4 and 4 rows of 3 count as the…