Brain Out Level 40

Overview

The board presents a short arithmetic question stacked in three lines, each reading 1 plus 2 plus 3 plus 1, with the equals mark and question mark attached only to the bottom line. A numeric keypad below the problem starts the answer field at 0, with Clear and OK buttons. The trap is to add all three lines together into one big sum, but the two upper lines are shown without an equals mark and do not ask for a result. Only the bottom line ending in "=?" is a real equation, and its value is 7.

• Difficulty: Regular
• Estimated moves: 2

Step-by-Step Solution

1. Read the problem slowly before touching the keypad. Notice which line carries the equals mark and the question mark; that line is the only one the board asks you to solve.
2. Look at the top two lines. They repeat the same additions but end without an equals sign, so they are not part of the requested calculation. Treat them as written decoration rather than terms to add in.
3. Move to the bottom line, which ends in "=?". Read its terms in order: 1, plus 2, plus 3, plus 1.
4. Work the bottom line step by step. Start with 1 plus 2 to get 3, add the third term 3 to reach 6, then add the final 1 to reach 7.
5. Enter 7 in the answer field using the keypad. If a wrong number was tapped first, use Clear to reset the field before typing the correct value.
6. Tap OK to submit. The board accepts 7 and the success panel appears, with the congratulation message that praises reading the problem carefully. If the answer is rejected, re-check that you solved only the bottom line rather than totaling all three.

The level rewards careful reading over fast arithmetic. The repeated lines are designed to make you combine everything into one long sum, while the equals mark shows where the actual question ends.

Strategy & Reasoning

A normal math puzzle asks for the total of all displayed expressions, and the repeated layout tempts you to add every term across the three rows. The detail that matters is punctuation: only the last line closes with "=?", so only that line demands a value. The upper repetitions are there to distract you into a larger calculation.

Summing all three lines fails because it treats the two non-equation rows as requested terms. Trying a random large number fails because it ignores the bottom line's own arithmetic. Ignoring the numbers and tapping a hidden symbol fails because no hidden object appears on this board. The intended approach is to locate the equals mark, read the single equation it belongs to, and compute that line alone. This matches other Brain Out levels where a congratulation about reading carefully signals that the wording or punctuation, not the complexity, holds the answer.

Tips & Common Mistakes

• Do not add all three rows together. The top two lines have no equals mark and are not part of the asked equation, so combining them produces a wrong inflated total.
• Solve the bottom line only. Its terms are 1, 2, 3, and 1, which add up to 7; enter that value rather than the grand total across the board.
• Check the answer field after using Clear. If a mistaken digit remains before you type 7, the submitted number will not match the bottom line's result, so reset the field first.