5(7.6.1.4.3.2.1)+1 , 5is a composit number
13(7.11.1)+1 , 13is a composit number
1001+13=10141014 is composite

Numbers are of two types – prime and composite.Prime numbers can be divided by 1 and only itself, whereas composite numbers have factors other than 1 and itself.It can be observed that7 × 11 × 13 + 13 = 13 × (7 × 11 + 1)= 13 × (77 + 1)= 13 × 78= 13 ×13 × 6The given expression has 6 and 13 as its factors.Therefore, it is a composite number.7 × 6 × 5 × 4 × 3 × 2 × 1 + 5= 5 ×(7 × 6 × 4 × 3 × 2 × 1 + 1)= 5 × (1008 + 1)= 5 ×10091009 cannot be factorized furtherTherefore, the given expression has 5 and 1009 as its factors.Hence, it is a composite number.

Numbers are of two types – prime and composite.Prime numbers can be divided by 1 and only itself, whereas composite numbers have factors other than 1 and itself.It can be observed that7 × 11 × 13 + 13 = 13 × (7 × 11 + 1)= 13 × (77 + 1)= 13 × 78= 13 ×13 × 6The given expression has 6 and 13 as its factors.Therefore, it is a composite number.7 × 6 × 5 × 4 × 3 × 2 × 1 + 5= 5 ×(7 × 6 × 4 × 3 × 2 × 1 + 1)= 5 × (1008 + 1)= 5 ×10091009 cannot be factorized furtherTherefore, the given expression has 5 and 1009 as its factors.Hence, it is a composite number.

Answer u want is in this app…..aap vahan dekh lo
Bcz it has more than two factors

because this number can be written in the form of more than 2 factors
7*11*13+1313(7*11+1)13*7813*13*2*3Therefore, 7*11*13+13 is composite number7*6*5*4*3*2*1+55(7*6*4*3*2*1+1)5(1009)5*1009*1Therefore, 5*1009*1 is composite number.

That is why both no. Are composite
Numbers are of two types – prime and composite.Prime numbers can be divided by 1 and only itself, whereas composite numbers have factors other than 1 and itself.It can be observed that=\xa0=\xa0=\xa0The given expression has 6 and 13 as its factors other than 1 and number itself.Therefore, it is a composite number.=\xa0=\xa0=\xa01009 cannot be factorized furtherTherefore, the given expression has 5 and 1009 as its factors other than 1 and number itself.Hence, it is a composite number.
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Bracket ke undar 1 kyo likha please tell me i am very confused in this chapter
Ye jo aapne kiya hai 5(7×6×4×3×2×1+1) usme 5 common liya to fir bracket ke undar fir se
Given\xa07×11×13+13\xa0=13×(7×11+1)=3×78\xa0This number is multiple of two integers.Hence it has more than two factors.Hence it is a composite number.similarly in7×6×5×4×3\xa0×2×1+5 =5(7×6×4×3\xa0×2×1+1)=5×1009 This number is multiple of two integers. Hence it has more than two factors. Hence it is a composite number.