How will you show that `(17xx11xx2)+(17xx11xx5)` is a composite numbers ? Explain.

How will you show that 41xx17xx61xx3+41xx17xx31xx5 is a composite number? Explain.

How will you show that (31xx37xx41xx3)+(31xx37xx41xx5) is a composite number? Explain (Hint: A composite number can be factorised as the product of primes.)

Explain why 31xx17xx13xx12+31xx17xx5 a composite number.

How do you say 7xx11xx13+13 and 7xx6xx5xx4xx3xx2xx1+5 are composite numbers? Explain it.

Explain why 19xx23xx29+17 is a composite number ?

Explain why 5xx11xx12+12 is a composite number.

Is 7xx5xx3xx2+3 a composite number ? Justify your answer.

(-12)xx(-11)xx0 =

Explain why 7xx 11 xx 13 and 7 xx 6 xx 5 xx 4 xx 3 xx 2 xx 1 +5 are composite numbers.

Explain why 7xx11xx13+13 and 7xx6xx5xx4xx3xx2xx1+5 are composite nubmers.