Bichromatic light of wavelengths ${\mathrm{\lambda }}_1=500 \text{Å and }{\mathrm{\lambda }}_2=7000 \text{Å}$ are used in YDSE. Then, 

21^st order maxima of ${\mathrm{\lambda }}_2$ will coincide with 15^th order maxima of ${\mathrm{\lambda }}_1$

3^rd order minima of ${\mathrm{\lambda }}_1$ will coincide with 4^th order maxima of ${\mathrm{\lambda }}_2$

11^th order minima of ${\mathrm{\lambda }}_1$ will coincide with 8^th order minima of ${\mathrm{\lambda }}_2$

14^th order maxima of ${\mathrm{\lambda }}_1$ will coincide with 10^th order maxima of ${\mathrm{\lambda }}_2$