Question

zlhow many three digit numbers can be formed out of the digits 0,1,3,5,7,9 if no digit repeated in any number?how many of these will be greater than 500? ​

Answer 1

आंकड़ों की संख्या =9 

=9×9×8=1 १×8 

=६×४×8

नोट: यदि प्रश्न है 0 ,1 ,2 ,3 ,4 ,5 ,6 ,7 ,8 ,9

=9×9×१ ०

तो जवाब है ९ ० ०