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Grade: 11
        
The sum of the value of the digit at the tens of all the number formed with the help of 3,4,5,6 taken all at time is
a)1080
b)4320
c)360
d)180
5 months ago

Answers : (2)

V S Pragalathan
18 Points
							
The tens of the numbers 3,4,5,6 are 30,40,50 and 60 respectively. Therefore, the sum of the tens will be :30+40+50+60=180.So,option(d) is the correct answer. 
5 months ago
Arun
19742 Points
							
Dear student
 
sum of digits in the ten’s place= 
 
(4-1)! (30+ 40 + 50+ 60)
 
= 1080
 
hope it helps
 
Regards
Arun (askIITians forum expert)
5 months ago
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