Evaluate the expression 2+2÷2×2-2.
Show answer Hide answer
Answer: C. 2
Explanation
Standard order of operations conventions dictate performing division and multiplication prior to addition and subtraction. Dividing two by two produces one, which is subsequently multiplied by two to yield two. Evaluating the remaining addition and subtraction expression results in a final numerical value of two. Mathematical precedence rules known as PEMDAS or BODMAS prevent ambiguity in arithmetic expression evaluations. Multiplication and division share equal operational priority and evaluate sequentially from left to right. Addition and subtraction also share equal operational priority and are evaluated from left to right.
Computer programming languages strictly follow standardized operator precedence rules to evaluate mathematical algorithms correctly. Engineering calculators rely on internal syntax parsing algorithms to compute multi-step arithmetic expressions without errors. Financial software applications process complex transactional formulas using universally accepted mathematical precedence standards. Option A suggests zero which misinterprets the sequential execution of addition and subtraction steps. Option B proposes negative two which results from performing arithmetic operations in an incorrect sequence. Option D implies one which stems from failing to execute the final addition and subtraction steps properly.
- Subject
- Mathematics
- Category
- Mathematics
- Topic
- —
- Difficulty
- medium
Related questions
Q1. Liquid levies escalate by 20% while usage contracts by 20%. Consequently, compute the percentage shift in financial expenditure:________?
Show answer Hide answer
Answer: D. 4 % decrease
A twenty percent price increase multiplies the original expenditure baseline by one point two. A twenty percent usage reduction multiplies the adjusted figure by zero point eight. Multiplying one point two by zero point...
Q2. What yearly payment clears a debt totaling Rs 1092 due across 3 years carrying a 12% simple interest rate?
Show answer Hide answer
Answer: A. Rs.325
Using the standard simple interest installment formula accounts for the principal debt and accumulated interest over three years. Dividing the total debt obligation by the installment factor at a 12 percent simple intere...
Q3. What is the surface area of a square property possessing sides measuring 15 m?
Show answer Hide answer
Answer: A. 225 sq m
The geometric formula for the area of a square is the side length squared. Multiplying fifteen meters by fifteen meters results in an area of two hundred twenty five. The resulting square meters correctly reflect the two...
Q4. Two inlet spigots fill a basin in 10 minutes and 15 minutes individually, and when combined with an open drain pipe, the basin fills in 18 minutes. How long does the drain pipe take to empty the completely filled basin?
Show answer Hide answer
Answer: D. 9 min
The combined flow rate of the two inlet pipes is found by summing their individual rates. Subtracting the net combined filling rate of eighteen minutes from the inlet rate gives the drain rate. Inverting the resulting dr...
Q5. A hexahedron possesses a surface area of 726m2; determine its volumetric capacity.
Show answer Hide answer
Answer: B. 1331 m3
A hexahedron, or cube, has six identical square faces, making each face area equal to 726 divided by six, or 121 square meters. Taking the square root of 121 gives an edge length of 11 meters for the cube. Cubing the edg...
Q6. What is the statistical likelihood of selecting two club suits from a standard thoroughly shuffled 52-card deck?
Show answer Hide answer
Answer: B. 1/17
The probability of drawing the first club suit from a standard deck is thirteen over fifty two. The probability of drawing a second club from the remaining cards is twelve over fifty one. Multiplying these two independen...