Question

if abcd is a four digit number how many such number exist such that a>b>c>d​

Answer 1

Answer:

16 number can exist with abcd letters

Answer 2

Answer:

ans 400 . hope it helps . please like me and mark me as BRAINLIEST

Step-by-step explanation:

400

a can take 5 values {1,3,5,7,9}

b can take 4 values {0,3,6,9}

c can take 5 values {0,2,4,6,8}

d can take 4 values {2,3,5,7}

Therefore, total such 4 digit number =5×4×5×4=400.