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how many numbers in form of abcd in which a>b=c

how many numbers in form of abcd in which a>b=c

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1 Answers

yaswanth
36 Points
8 years ago
IF A=1 THEN B=C=0;D=0-9  10 NUMBERS
IF A=2 THEN B=C=0,1;D=0-9  20 NUMBERS
IF A=3 THEN B=C=0-2;D=0-9  30 NUMBERS
IF A=4 THEN B=C=0-3;D=0-9  40 NUMBERS
IF A=5 THEN B=C=0-4;D=0-9  50 NUMBERS
IF A=6  60 NUMBERS
IF A=7  70 NUMBERS
IF A=8  80 NUMBERS
IF  A=9  90 NUMBERS
SO,TOTAL NUMBERS=10+20+30+40+50+60+70+80+90=450
 

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