CBSE Class 10 Answered
Explain why 7×11×13+13 and 7×6×5×4×3×2×1+5 are composite numbers?
Asked by lhadontsering58 | 28 Sep, 2020, 12:52: PM
Expert Answer
A number is composite if it is divisible by a number other than 1 and itself.
In the number 7 x 11 x 13 + 13, 13 is common in both the terms. So, it can be written as (7 x 11 + 1) x 13
This number is divisible by 13. Thus, it is a composite number.
In the number 7 x 6 x 5 x 4 x 3 x 2 x 1 + 5
5 is common in both the terms. So, it can be written as (7 x 6 x 4 x 3 x 2 x 1 + 1) x 5
This number is divisible by 5. Thus, it is a composite number.
Answered by Yasmeen Khan | 29 Sep, 2020, 12:19: PM
Application Videos
-
Relation between HCF and LCM
This video describe Relation between HCF and LCM. -
Word Problem based on LCM and HCF
This video explains the use of LCM and HC in solving a word problem. -
LCM and HCF
The video describes to find the HCF of two numbers
-
Relation between LCM and HCF
The video describes the relation between LCM and HCF & the numbers
Prime Factorisation of A Number
The video explains a question based on the factorisation of a number
Concept Videos
-
Fundamental Theorem of Arithmetic ...
Determination of H.C.F and L.C.M of numbers using Prime Factorization and ... -
Fundamental Theorem of Arithmetic
Determination of H.C.F and L.C.M of numbers using Prime Factorization and s... -
Fundamental Theorem of Arithmetic ...
Determination of H.C.F and L.C.M of numbers using Prime Factorization and ... -
Real Numbers
Real Numbers, Fundamental Theorem of Arithmetic
CBSE 10 - Maths
Asked by bhaskrraobhaskrrao | 18 Jan, 2024, 08:35: PM
ANSWERED BY EXPERTCBSE 10 - Maths
Asked by dramu8989 | 02 Dec, 2023, 09:15: PM
ANSWERED BY EXPERTCBSE 10 - Maths
Asked by poornimam227 | 30 Nov, 2023, 05:24: PM
ANSWERED BY EXPERTCBSE 10 - Maths
Asked by priyanshuaryan895 | 08 Nov, 2023, 07:18: AM
ANSWERED BY EXPERTCBSE 10 - Maths
Asked by ruchipandey20071978 | 07 May, 2023, 01:23: PM
ANSWERED BY EXPERTCBSE 10 - Maths
Asked by susrisangita792 | 22 Apr, 2023, 09:13: PM
ANSWERED BY EXPERTCBSE 10 - Maths
Asked by susrisangita792 | 22 Apr, 2023, 08:52: PM
ANSWERED BY EXPERTCBSE 10 - Maths
Asked by susrisangita792 | 20 Apr, 2023, 08:05: AM
ANSWERED BY EXPERTCBSE 10 - Maths
can end with the digit 0 for any natural number n.
Asked by susrisangita792 | 19 Apr, 2023, 08:27: AM
ANSWERED BY EXPERT
Get in Touch
