We are given the expression:
56 + 20 − 19
According to the given information:
Thus, the expression becomes:
56 × 20 + 19
Now, calculate step by step:
Thus, the value of 56 + 20 − 19 is 1139.
Conclusion: The correct answer is (c) 1139.
The diagram below shows a river system consisting of 7 segments, marked P, Q, R, S, T, U, and V. It splits the land into 5 zones, marked Z1, Z2, Z3, Z4, and Z5. We need to connect these zones using the least number of bridges. Out of the following options, which one is correct? Note:
In the given figure, PQRS is a square of side 2 cm, and PLMN is a rectangle. The corner \( L \) of the rectangle is on the side \( QR \). Side \( MN \) of the rectangle passes through the corner \( S \) of the square. What is the area (in cm\(^2\)) of the rectangle PLMN? Note: