Skip to main content

Aptitude Day 4



Answers of Day 3:  1.  360 * 17 = 360*(20-3)  = 7200 - 1080 = 6120
                                 2.  8756 * 99999 = 8756 * (100000-1) = 875591244
                                 3.  18888 * 999 = 18888 * (1000-1) = 18869112
                                 4.   5659 * 1000001 = 5659 * (1000000 + 1) =  5659005659

Unit Digit:

Example: Unit digit of the sum is 4938 + 8942 + 3937 + 4856 + 29393 = 6
           
Solution: 8+2=10, 0+7=7, 7+6=13, 3+3= 6. Add only the unit digit of the numbers, when it ends up in 2 digits again consider only the unit digit to add to the next number as shown above.


Problems to solve

Find the unit digit of the sum in the following

1. 25086+4271938+93728+3780967 = ?

2. 857064+889775+96369+687477 = ?

3. 527639+9992499+7488329+32516922 = ?

4. 739876+62259+669932+9759611 = ?

Answers are here Aptitude Day 5

Comments

Post a Comment

Popular posts from this blog

Aptitude Day 5

Answers of Day 4 :   1. 9                                   2. 5                                   3. 9                                   4. 8 To find the unit digit in the product. This is similar to the last model where we will find the unit digit of the sum. Example: 432*459*28*48=? Solution:  2*9=18 , 8*8=64, 4*8= 32. The unit digit of the total product is 2.  Problems to solve Find the unit digit of the product in the following 1. 404*397*810*21 =? 2. 24*42*36*78 =? 3. 81*82*89 =? 4. 72*36*98*47 =? See you tomorrow friends... Check out the answers over here  Aptitude Day 6
Post a Comment
Read more

Aptitude Day 59

Answers of Day 58:     1. 1/90.     2. 20 Problems to solve: 1. The product of two numbers is 33 and the sum of their squares is 130. Find their difference. 2. The sum of two numbers is 100 and their difference is 20. Find their product.
Post a Comment
Read more

Vocabulary Day 55

Dilemma Thesaurus: Noun : problem            double bind, difficulty, crisis, embarrassment, mess, puzzle...  Antonyms :  solution...  Example sentences:                  That's a serious dilemma we should think about that.          He'll never share his dilemma with anyone. 
Post a Comment
Read more