TY  - GEN
AU  - Tyagi, Praveen
TI  - Secrets behind faster calculations
SN  - 9789387766860 
U1  - 510 
PY  - 2018///
CY  - New Delhi
PB  - G K publications
KW  - Multiplication
KW  - Percentage
KW  - Addition and subtraction
N1  - :includes bibliographical references and Index
ER  -