alleryA 3-digit code starts with 4; tens digit is twice units; digit sum is 13. Code?
- 436
- 484
- 442
- 463
Show answer and solution
Correct answer: D. 463
The last two digits sum to 9 with tens twice units, giving units 3 and code 463.
RPF Constable Problem Solving and Arithmetical Reasoning — practice questions — page 2
Explore 64 free Problem Solving and Arithmetical Reasoning questions in RPF Constable General Intelligence and Reasoning. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 31–60 of 64.
A 3-digit code starts with 4; tens digit is twice units; digit sum is 13. Code?Read the answer and worked solution →Day 1 output is 6 units and doubles daily. Total output over days 1 to 5?Read the answer and worked solution →Ravi is 12th from the front and 17th from the back. Three join ahead. New front rank?Read the answer and worked solution →Each truck can carry at most 24 crates. Minimum trucks to move 158 crates?Read the answer and worked solution →Tasks P and Q take 4 and 6 h and can run together; R takes 3 h after both. Minimum total?Read the answer and worked solution →P and Q hold 72 beads; moving 9 from P to Q makes Q twice P. P's initial count?Read the answer and worked solution →Three payments total ₹225; each is ₹15 above the previous one. First payment?Read the answer and worked solution →Renu spends half her cash, then one-third of what remains; ₹20 is left. Initial cash?Read the answer and worked solution →Adult tickets cost ₹40 and child tickets ₹25; 23 tickets bring ₹740. Adult tickets?Read the answer and worked solution →A two-digit number is 4 times its digit sum; reversing it adds 27. Number?Read the answer and worked solution →A test gives +5 per correct answer and −2 per wrong one; 18 answers score 55. Correct count?Read the answer and worked solution →In 6 years a mother will be twice her child's age; 6 years ago she was four times it. Mother now?Read the answer and worked solution →Packs of 6 cost ₹35 and packs of 10 cost ₹52. Least cost for exactly 54 items?Read the answer and worked solution →Largest stock count from 100 to 200 divisible by 9 and leaving 2 when divided by 5?Read the answer and worked solution →A stall sells half its stock plus 6, then half the rest plus 4; 11 remain. Initial stock?Read the answer and worked solution →A makes 6 units/h; B makes 4 units/h and starts 2 h later. When are 92 units done, from A's start?Read the answer and worked solution →One-third of cash goes on food, then 2/5 of the rest on travel; after ₹48 fees, 1/5 remains. Initial cash?Read the answer and worked solution →Match the calculated resultRead the answer and worked solution →Match the calculated resultRead the answer and worked solution →Six A–F sit in a row. B is just right of D; A just left of C; C is two places right of F. E is at the right end; D is left of F. Who is third from the left?Read the answer and worked solution →K–P fill floors 1(bottom)–6. K is on 2 or 5; L on 1 or 4; M on 3 or 6. N is two floors above O. P is below K, O above L, and M above N. O’s floor?Read the answer and worked solution →A–E get different colours: A red/blue; B blue/green; C green/white; D white/yellow; E yellow/red. If B is blue, D is not white. Who gets red?Read the answer and worked solution →A(4 h) and B(3 h) start together. C(5 h) needs A; D(4 h) needs B. C and D share one machine. E(2 h) needs both C and D. Earliest finish?Read the answer and worked solution →Six A–F sit in a circle. B is opposite A; E is just clockwise of B; C is two seats clockwise of D. Who is immediately clockwise of C?Read the answer and worked solution →One of A–D broke a lock. A says “B did it”; B says “C did it”; C says “B’s claim is false”; D says “I did not”. Exactly one claim is true. Who did it?Read the answer and worked solution →Code ABCD uses distinct digits 1–6. C=2D and A+C=B+D. The two-digit numbers AB and CD differ by 24, with AB larger. Find A×C+B×D.Read the answer and worked solution →Buy whole boxes for exactly 72 meals, at least 15 veg. P:6 meals(1 veg),₹70. Q:9 meals(3 veg),₹110; at most 6 Q boxes. Minimum cost?Read the answer and worked solution →Of coins A–E,one is 1 g above normal,another 1 g below; others normal. Weights satisfy A+B>C+D; A+C=B+E; B>D. Which coin is light?Read the answer and worked solution →A–E each play every other team once,no draws; each wins 2. A beat B,B beat C,C beat D. If D beat E,then A beat C. Who must have beaten A?Read the answer and worked solution →Jobs A(2,5),B(4,1),C(3,3) need X then Y (hours). Each machine does 1 job at a time; no splitting. Use the same order on both machines. Fastest order?Read the answer and worked solution →
Worked practice questions
Day 1 output is 6 units and doubles daily. Total output over days 1 to 5?
- 186 units
- 198 units
- 192 units
- 180 units
Show answer and solution
Correct answer: A. 186 units
The five daily outputs are 6, 12, 24, 48 and 96, totaling 186 units.
Ravi is 12th from the front and 17th from the back. Three join ahead. New front rank?
- 14th
- 15th
- 16th
- 17th
Show answer and solution
Correct answer: B. 15th
The three new people ahead move Ravi's front rank from 12 to 15.
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