There are some Crows and Cows in a field. If the total number of heads in the field is 480 and the total number of legs is 1320, what is the number of crows in the field?

Number of crows = 5/8× 480 = 300 Alternate shortcut method: Number of cows = (4×number of legs – number of feet)/2 = (4×480 – 1320 )/2 = (1920 – 1320 )/2 = 600/2 =300 Note: if number of cows is asked, then use this shortcut, Number of crows = (number of legs –2×number of feet)/2

If ‘%’ means (÷), ‘&’ means (+), ‘$’ means (×), and ‘@’ means (-), then what is the value of the expression:

Which two numbers should be interchanged to make the given equation correct?

620 + 75 ÷ 8 × 35 – 44 × 5 + 15 = 583

Which two signs should be interchanged to make the following equation correct?

48 – 114 ÷ 3 + 6 × 7 = 44

Select the correct sequence of mathematical signs to replace the ‘@’ signs so as to balance the given equation.

264 @ 44 @ 17 @ 6 @ 32 = 76

If 65 + 54 = 2, 71 + 62 = 10, then 73 + 83 = ?

If ‘P’ means ‘+’, V means ‘×’, T means ‘-‘ and ‘Q’ means “÷’ , then find the value of the expression given below:

Select the correct combination of the mathematical signs to replace the ‘@’ symbols in the below equation and thereby balance it:

If ‘÷’ means ‘-’, ‘-’ mean ‘+’, ‘+’ means ‘×’ and ‘×’ means ‘÷’, compute the value of the expression:

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