Substitute digits for the letter A to make the following Addition problem true.
Correct Answer : b
Explanation : 1+9+7 +4 so the answer will 23 and if we add 5+6+4 so the answer will 17.
Substitute digits for the letter N to make the following Addition problem true.
We have 7+5=12, 1 is carried forward, so 1+N+8=_5, which gives N=6
Substitute digits for the letter A to make the following Addition problem true.
Adding one’s place 5+7+8=20, 2 is carried forward.adding the ten’s place 2+3+9+8=22, this means A=2
Substitute digits for the letter A to make the following Multiplication problem true.
We have A*4=_8 so A can be 2 or 7.now if A is 7,then we have 2 as carried forward so 4*3+2=14_7A,when A=2, we have no carried forward so4*3=12=_2=A. Hence A=2
Substitute digits for the letters P and Q to make the following Multiplication problem true.
As we see the addition part,we have 23PPQ, this means that we don’t have any carried forward for the thousand’s place this means we have only single digit by adding Q and P, so Q+P =P only when Q=0,and now seeing the multiplication we have 3*P=_P which is only possible when P=5.
By which of the following number 168 is divisible?
The numbers ending with 2,4,6,8 ,0 are divisible by 2.
Substitute digits for the letters A and B to make the following Multiplication problem true.
Looking at the addition of the hundred’s place we have 7+7+2=_A which gives A=6. Coming back to the multiplication which is A*B=B where A=6 ,so B can be 4 or 6, but when you take B=6, we have 3 as carried forward and 7*6+3 is not equal to 0. Hence B=4 and A=6.
By which of the following number 225 is divisible? 2, 3, 4, and 6
Suppose that the division N ÷ 5 leaves a remainder of 4, and the division N ÷ 2 leaves a remainder of 1. What must be the one’s digit of N?
Since N leaves the remainder of 4 when divided by 5. the possible values in ones place of number N are 4 or 9.
now, since it leaves a remainder of 1 when divided by 2, the N would be an odd number. hence ones digit of N is also an odd number. which means ones digit of our number N is 9.
If a number is divisible by 9, then it is also divisible by which number?
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