how many 3 digit numbers can be formed by using 2,4 and 5 such that product of the digits of numbers become even...	Choose the correct choice from the following options:
A) 27
B) 26
C) 25
D) 24
E) 23
A 3-digit no. is to be formed.   So no. of digits = 3*3*3 (with repetition ,as no condition is given)   But, the product of digits has to be even in each case..   hence, 125 (5*5*5) has to be excluded from those 27 no.s   Thus, answer is   27 - 1= 
<gadget id="calculator">  27 - 1</gadget>
<output>26</output>
26   ANSWER:26
<result>B</result>
how many 3 digit numbers can be formed by using 2,4 and 5 such that product of the digits of numbers become even...