contestada

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 ​

Respuesta :

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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