No, 2 x 3 x 7 = 42
No, 21 is not prime.
42 = 2 × 3 × 7
42.
The largest prime factor of 42 is 7
No. 42 is composite and therefore cannot be a prime factor.
7x6 21x2 14x3 10.5x4 8.4x5
42 + 21 x 2 = 84
you are almost there, you must split it one more time. 21 is divisible by 7 and 3, so the prime factorization of 42 is 7x3x2
Its 42 (2x21)=42 (7x6)=42 (21x2)=42
It is: 2*3*7 = 42
A Factor tree looks like this:... 42... / . \..2 ...21....... / . \.......3 . 7So the prime factors of 42 are 2 x 3 x 7
42 21,2 7,3,2