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If a, b, c are three whole numbers then ...

If a, b, c are three whole numbers then `(a+b)+c=a+(b+c) and axx(b+c)=axxb+axxc`
Find the value of `1546+(984+5389)`.

A

1917

B

2530

C

7990

D

7919

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Knowledge Check

  • If a. b = a . C and axx b = a xx c , then

    A
    a is perpendicular to b -c
    B
    a is parallel to b -c
    C
    either a = 0 or b = c
    D
    none of these

  • If a,b, c be three vectors such that axx b = c, b xx c = a, c xx a =b then

    A
    `|a| = |b|`
    B
    `|b| = |c|`
    C
    `|c| = |a|`
    D
    `|a| = |b| = |c|`

  • If a, b, c are three unequal numbers such that a, b, c are in A.P. and b - a, c - b, a are in G.P., then a : b : c is

    A
    `1 : 2 : 3`
    B
    `1 : 3 : 5`
    C
    `2 : 3 : 4`
    D
    `1 : 2 : 4`

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