THE NUMBER OF 5 DIGIT NUMBERS SUCH THAT THE SUM OF THE DIGITS IS EVEN IS
A) 50000
B) 45000
C) 60000
D) NONE OF THESE
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THE NUMBER OF 5 DIGIT NUMBERS SUCH THAT THE SUM OF THE DIGITS IS EVEN IS
A) 50000
B) 45000
C) 60000
D) NONE OF THESE
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The number of five digit numbers such that the sum of the digits is even is 6000(cause on adding it gets divided by 2.)
correct option is b) 45000
now let me explain u.
since the first digit can't be 0. so the first digit can be chosen in 9 ways.
and the rest of the 4 digits can be 0, so it can be chosen in 10 ways.
and the sum of the digits is even. so we will simply find the half.
= (9 × 10 × 10 × 10 × 10)/2
= 90000/2
= 45000