TCS Company Numerical Ability Data Interpretation

The addition 742586 + 829430 = 1212016 is incorrect. It can be corrected by changing
one digit d, wherever it occurs, to another digit e. Find sum of d and e.
A. 6
B. 4
C. 10
D. 8

Read Solution (Total 5)

as we know 742586+829430=1572016
and given incorrect sum is 1212016
so we find that addiion of 5th and 6th position digit is incorrect
so,
4d+2e=7 and 7d+8e=15
and we get d is approx equal to 2 and e is approx equal to 6
so d+e=8
10 years agoHelpfull: Yes(21) No(10)

change the digit 2 into 6(746586+869430=1616016),,sum of 2+6=8
10 years agoHelpfull: Yes(13) No(12)
change the 2 to 6 in all the three numbers, the operands and the result..
10 years agoHelpfull: Yes(6) No(12)
according to the question
742586 + 829430 = 1572016
here 5th and 6th place are incorrect
so,
4d + 2e = 7
7d + 8e = 15
solving we get
d = 2
e = 6
so,
d + e = 8
9 years agoHelpfull: Yes(3) No(3)
8
swap 8 and 4
9 years agoHelpfull: Yes(2) No(2)

TCS Other Question

Oshkosh did a study of the colors used in African national flags. He found that 38 flags have red, 20 have blue, 13 have both red and blue, and 8 have neither red nor blue. How many flags A. have red but not blue? B. have blue but not red? C. were included in the study?
25, 7, 53
38, 20, 79
25, 7, 66
30, 20, 60
In 2003, there are 28 days in February and there are 365 days in the year. In 2004, there are 29 days in February and there are 366 days in the year. If the date March 11, 2003 is a Tuesday, then which one of the following would be the date March 11, 2004 be?
A. Wednesday
B. Tuesday
C. Thursday
D. Monday