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19 June, 19:32

How many number of two digits can be formed

out of the four digits p, q, r, & s? (CMAT 2002]

a. 6

b. 11

c. 12

d. 13

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Answers (1)
  1. 19 June, 21:30
    0
    Here are the possible combinations of two digits

    Pp

    Pq

    Pr

    Ps

    Qp

    Qq

    Qr

    Q's

    Rp

    Rq

    Rr

    Rs

    Sp

    Sq

    Sr

    Ss

    16 different combinations

    Answer not in the choices
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