lets see and example, 3/2 =1.5 its terminating, 3/4=0.75 3/5 = 0.6 3/25=0.12 etc...... so you can see that when denominator contains either 2 or 5 only or their combination(multiple) it will always be terminating and hence it will be a rational number
take simple eg,,, h(100) = 2 *4*8*10......100 so ,= 2^50(1.2.3......25)= 2^50*2*2^2*2^3*2^4( 1.3.5.6.7.9.10.11.12.13.14.15.17.18.19.20.21.22.23.24.25) and so on h(100)+1 will have a smallest prime no greater than 50 hence E
Two different numbers when divided by the same divisor left remainders of 11 and 21 respectively. When the numbers' sum was divided by the same divisor, the remainder was 4. What was the divisor?
36, 28, 12, 9 or none
The numbers x and y are three-digit positive integers, and x + y is a four-digit integer. The tens digit of x equals 7 and the tens digit of y equals 5. If x
I. The units digit of x + y is greater than the units digit of either x or y.
II. The tens digit of x + y equals 2.
III. The hundreds digit of y is at least 5.
A. II only
B. III only
C. I and II
D. I and III
E. II and III
IMO C, why do we need those, where is the plural subject? i guess light is being compared and not the telescopes, those may refer to telescope which would change the meaning