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Question 1
If the 6-digit numbers x35624 and 1257y4 are divisible by 11 and 72, respectively, then what is the value of (5x – 2y)?
Question 2
Find the unit digit of: (3124 – 3123 – 3122)(255 – 253 – 251)
Question 3
Find the number of prime factors in the product (30)5 × (24)5.
Question 4
If A = 232, B = 231 + 230 + 229 + ... + 20 and C = 315 + 314 + 313 + ... + 30 then which of the following option is TRUE?
Question 5
If and then what is the value of?
Question 6
If 1 + (1/2) + (1/3) +.....+ (1/20) = k; then what is the value of (1/4) + (1/6) + (1/8) +.....+ (1/40)
Question 7
If upto 60 terms, then what is the value of A?
Question 8
Find the unit digit of
Question 9
What is the value of ?
Question 10
What is the unit digit of: 15 + 25 + 35 + .... + 205 ?
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Jul 13SSC & Railway