Home
Class 10
MATHS
a and b are two positive integers such t...

a and b are two positive integers such that the least prime factor of b is 3 and the least prime factor of b is 5. Then, the least prime factor of (a + b) is:

A

2

B

3

C

5

D

8

Text Solution

Verified by Experts

The correct Answer is:
A
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • REAL NUMBERS

    OSWAAL PUBLICATION|Exercise TOPIC -2 PRIME FACTORIZATION (H.C.F., L.C.M.) ( VERY SHORT ANSWER TYPE QEUSTIONS )|6 Videos

  • REAL NUMBERS

    OSWAAL PUBLICATION|Exercise TOPIC -2 PRIME FACTORIZATION (H.C.F., L.C.M.) ( SHORT ANSWER TYPE QEUSTIONS )|7 Videos

  • REAL NUMBERS

    OSWAAL PUBLICATION|Exercise TOPIC -1 EUCLID.S DIVISION ALGORITHM ( LONG ANSWER TYPE QUESTIONS -II)|2 Videos

  • QUADRATIC EQUATIONS

    OSWAAL PUBLICATION|Exercise TEXTBOOK CORNER (EXERCISE 10.4) |8 Videos

  • SOLVED PAPER (SSLC KARNATAKA APRIL 2019)

    OSWAAL PUBLICATION|Exercise Answer the following :|29 Videos

Similar Questions

Explore conceptually related problems

In prime factorization of 1309 write the highest prime factor.

Prime factor form of 24

Knowledge Check

  • The number of prime factors of 145 is:

    A
    2
    B
    3
    C
    4
    D
    5

  • a and b are positive integers such that a^3 - b^2 is a prime number. Then a^2 - b^2=

    A
    `a + b`
    B
    `ab`
    C
    `a - b`
    D
    1

  • The product of prime factors of 120 is

    A
    `2^(3)xx3^(2)xx5^(1)`
    B
    `2^(2)xx3^(1)xx5^(1)`
    C
    `2^(3)xx3^(1)xx5^(2)`
    D
    `2^(3)xx3^(1)xx5^(1)`

    • Similar Questions

    Explore conceptually related problems

    How many prime factors are there in the prime factorisation of 120 ?

    Write 96 as the product of prime factors.

    The number of positive integer solutions of a+b+c=60, where a is a factor of b and c, is

    a and b are positive integers such that a^(2) - b^(2) is a prime number. Then a^(2) - b^(2) =

    The factors of 32 (expressed as a product of prime factors) are

    Home
    Profile